Home / 210,939,938,815.38-291,122,070,988.71-125,301,242,908.68

Finding the Fourth Proportional to 210,939,938,815.38, 291,122,070,988.71 and 125,301,242,908.68

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Solution

The fourth proportional to 210,939,938,815.38, 291,122,070,988.71 and 125,301,242,908.68 is: 172,930,539,080.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,939,938,815.38 : 291,122,070,988.71 = 125,301,242,908.68 : x
  2. Step 2: Convert to fraction form
    210,939,938,815.38/291,122,070,988.71 = 125,301,242,908.68/x
  3. Step 3: Cross multiply
    210,939,938,815.38x = 291,122,070,988.71 × 125,301,242,908.68
  4. Step 4: Simplify right side
    210,939,938,815.38x = 36,477,957,333,034,333,110,272
  5. Step 5: Solve for x
    x = 36,477,957,333,034,333,110,272/210,939,938,815.38
  6. Step 6: Final answer
    x = 172,930,539,080.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.