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Finding the Fourth Proportional to 99,988.60, 149,814.42 and 60,424.96

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Solution

The fourth proportional to 99,988.60, 149,814.42 and 60,424.96 is: 90,535.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,988.60 : 149,814.42 = 60,424.96 : x
  2. Step 2: Convert to fraction form
    99,988.60/149,814.42 = 60,424.96/x
  3. Step 3: Cross multiply
    99,988.60x = 149,814.42 × 60,424.96
  4. Step 4: Simplify right side
    99,988.60x = 9,052,530,335.92
  5. Step 5: Solve for x
    x = 9,052,530,335.92/99,988.60
  6. Step 6: Final answer
    x = 90,535.62

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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.