Home / 99,391,020.42-148,892,578.92-77,428,564.26

Finding the Fourth Proportional to 99,391,020.42, 148,892,578.92 and 77,428,564.26

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Solution

The fourth proportional to 99,391,020.42, 148,892,578.92 and 77,428,564.26 is: 115,991,752.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,391,020.42 : 148,892,578.92 = 77,428,564.26 : x
  2. Step 2: Convert to fraction form
    99,391,020.42/148,892,578.92 = 77,428,564.26/x
  3. Step 3: Cross multiply
    99,391,020.42x = 148,892,578.92 × 77,428,564.26
  4. Step 4: Simplify right side
    99,391,020.42x = 11,528,538,614,744,342
  5. Step 5: Solve for x
    x = 11,528,538,614,744,342/99,391,020.42
  6. Step 6: Final answer
    x = 115,991,752.23

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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.