Home / 210,939,938,838.51-291,122,071,020.71-125,301,242,931.81

Finding the Fourth Proportional to 210,939,938,838.51, 291,122,071,020.71 and 125,301,242,931.81

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Solution

The fourth proportional to 210,939,938,838.51, 291,122,071,020.71 and 125,301,242,931.81 is: 172,930,539,112.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,939,938,838.51 : 291,122,071,020.71 = 125,301,242,931.81 : x
  2. Step 2: Convert to fraction form
    210,939,938,838.51/291,122,071,020.71 = 125,301,242,931.81/x
  3. Step 3: Cross multiply
    210,939,938,838.51x = 291,122,071,020.71 × 125,301,242,931.81
  4. Step 4: Simplify right side
    210,939,938,838.51x = 36,477,957,343,777,631,764,480
  5. Step 5: Solve for x
    x = 36,477,957,343,777,631,764,480/210,939,938,838.51
  6. Step 6: Final answer
    x = 172,930,539,112.86

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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.