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Finding the Fourth Proportional to 99,678.80, 149,348.95 and 60,152.86

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Solution

The fourth proportional to 99,678.80, 149,348.95 and 60,152.86 is: 90,127.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,678.80 : 149,348.95 = 60,152.86 : x
  2. Step 2: Convert to fraction form
    99,678.80/149,348.95 = 60,152.86/x
  3. Step 3: Cross multiply
    99,678.80x = 149,348.95 × 60,152.86
  4. Step 4: Simplify right side
    99,678.80x = 8,983,766,516.80
  5. Step 5: Solve for x
    x = 8,983,766,516.80/99,678.80
  6. Step 6: Final answer
    x = 90,127.15

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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.