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Finding the Fourth Proportional to 99,696,948.30, 149,545,422.45 and 65,656,730.70

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Solution

The fourth proportional to 99,696,948.30, 149,545,422.45 and 65,656,730.70 is: 98,485,096.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,696,948.30 : 149,545,422.45 = 65,656,730.70 : x
  2. Step 2: Convert to fraction form
    99,696,948.30/149,545,422.45 = 65,656,730.70/x
  3. Step 3: Cross multiply
    99,696,948.30x = 149,545,422.45 × 65,656,730.70
  4. Step 4: Simplify right side
    99,696,948.30x = 9,818,663,529,217,384
  5. Step 5: Solve for x
    x = 9,818,663,529,217,384/99,696,948.30
  6. Step 6: Final answer
    x = 98,485,096.05

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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.