Home / 163,346,805.20-245,020,207.80-72,479,579.60

Finding the Fourth Proportional to 163,346,805.20, 245,020,207.80 and 72,479,579.60

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Solution

The fourth proportional to 163,346,805.20, 245,020,207.80 and 72,479,579.60 is: 108,719,369.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,346,805.20 : 245,020,207.80 = 72,479,579.60 : x
  2. Step 2: Convert to fraction form
    163,346,805.20/245,020,207.80 = 72,479,579.60/x
  3. Step 3: Cross multiply
    163,346,805.20x = 245,020,207.80 × 72,479,579.60
  4. Step 4: Simplify right side
    163,346,805.20x = 17,758,961,654,848,640
  5. Step 5: Solve for x
    x = 17,758,961,654,848,640/163,346,805.20
  6. Step 6: Final answer
    x = 108,719,369.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.