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Finding the Fourth Proportional to 99,898.20, 149,652.90 and 60,337.80

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Solution

The fourth proportional to 99,898.20, 149,652.90 and 60,337.80 is: 90,389.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,898.20 : 149,652.90 = 60,337.80 : x
  2. Step 2: Convert to fraction form
    99,898.20/149,652.90 = 60,337.80/x
  3. Step 3: Cross multiply
    99,898.20x = 149,652.90 × 60,337.80
  4. Step 4: Simplify right side
    99,898.20x = 9,029,726,749.62
  5. Step 5: Solve for x
    x = 9,029,726,749.62/99,898.20
  6. Step 6: Final answer
    x = 90,389.28

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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.