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Finding the Fourth Proportional to 99,691,932.60, 149,691,863.70 and 54,342,300.60

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Solution

The fourth proportional to 99,691,932.60, 149,691,863.70 and 54,342,300.60 is: 81,597,377.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,691,932.60 : 149,691,863.70 = 54,342,300.60 : x
  2. Step 2: Convert to fraction form
    99,691,932.60/149,691,863.70 = 54,342,300.60/x
  3. Step 3: Cross multiply
    99,691,932.60x = 149,691,863.70 × 54,342,300.60
  4. Step 4: Simplify right side
    99,691,932.60x = 8,134,600,254,559,628
  5. Step 5: Solve for x
    x = 8,134,600,254,559,628/99,691,932.60
  6. Step 6: Final answer
    x = 81,597,377.46

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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.