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Finding the Fourth Proportional to 99,762,933.60, 149,644,400.40 and 65,498,767.20

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Solution

The fourth proportional to 99,762,933.60, 149,644,400.40 and 65,498,767.20 is: 98,248,150.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,762,933.60 : 149,644,400.40 = 65,498,767.20 : x
  2. Step 2: Convert to fraction form
    99,762,933.60/149,644,400.40 = 65,498,767.20/x
  3. Step 3: Cross multiply
    99,762,933.60x = 149,644,400.40 × 65,498,767.20
  4. Step 4: Simplify right side
    99,762,933.60x = 9,801,523,744,583,188
  5. Step 5: Solve for x
    x = 9,801,523,744,583,188/99,762,933.60
  6. Step 6: Final answer
    x = 98,248,150.80

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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.