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Finding the Fourth Proportional to 99,377.40, 148,979.70 and 59,892.60

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Solution

The fourth proportional to 99,377.40, 148,979.70 and 59,892.60 is: 89,786.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,377.40 : 148,979.70 = 59,892.60 : x
  2. Step 2: Convert to fraction form
    99,377.40/148,979.70 = 59,892.60/x
  3. Step 3: Cross multiply
    99,377.40x = 148,979.70 × 59,892.60
  4. Step 4: Simplify right side
    99,377.40x = 8,922,781,580.22
  5. Step 5: Solve for x
    x = 8,922,781,580.22/99,377.40
  6. Step 6: Final answer
    x = 89,786.83

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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.