Home / 151,721,988.71-209,377,004.16-82,107,375.74

Finding the Fourth Proportional to 151,721,988.71, 209,377,004.16 and 82,107,375.74

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Solution

The fourth proportional to 151,721,988.71, 209,377,004.16 and 82,107,375.74 is: 113,308,535.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,721,988.71 : 209,377,004.16 = 82,107,375.74 : x
  2. Step 2: Convert to fraction form
    151,721,988.71/209,377,004.16 = 82,107,375.74/x
  3. Step 3: Cross multiply
    151,721,988.71x = 209,377,004.16 × 82,107,375.74
  4. Step 4: Simplify right side
    151,721,988.71x = 17,191,396,350,833,778
  5. Step 5: Solve for x
    x = 17,191,396,350,833,778/151,721,988.71
  6. Step 6: Final answer
    x = 113,308,535.55

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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.