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Finding the Fourth Proportional to 99,648,120.60, 149,472,180.90 and 83,864,322.90

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Solution

The fourth proportional to 99,648,120.60, 149,472,180.90 and 83,864,322.90 is: 125,796,484.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,648,120.60 : 149,472,180.90 = 83,864,322.90 : x
  2. Step 2: Convert to fraction form
    99,648,120.60/149,472,180.90 = 83,864,322.90/x
  3. Step 3: Cross multiply
    99,648,120.60x = 149,472,180.90 × 83,864,322.90
  4. Step 4: Simplify right side
    99,648,120.60x = 12,535,383,243,564,814
  5. Step 5: Solve for x
    x = 12,535,383,243,564,814/99,648,120.60
  6. Step 6: Final answer
    x = 125,796,484.35

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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.