Home / 99,755,430.60-149,745,120.30-77,136,601.80

Finding the Fourth Proportional to 99,755,430.60, 149,745,120.30 and 77,136,601.80

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Solution

The fourth proportional to 99,755,430.60, 149,745,120.30 and 77,136,601.80 is: 115,791,487.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,755,430.60 : 149,745,120.30 = 77,136,601.80 : x
  2. Step 2: Convert to fraction form
    99,755,430.60/149,745,120.30 = 77,136,601.80/x
  3. Step 3: Cross multiply
    99,755,430.60x = 149,745,120.30 × 77,136,601.80
  4. Step 4: Simplify right side
    99,755,430.60x = 11,550,829,716,074,198
  5. Step 5: Solve for x
    x = 11,550,829,716,074,198/99,755,430.60
  6. Step 6: Final answer
    x = 115,791,487.71

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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.