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Finding the Fourth Proportional to 103,737.60, 155,476.80 and 76,003.20

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Solution

The fourth proportional to 103,737.60, 155,476.80 and 76,003.20 is: 113,909.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,737.60 : 155,476.80 = 76,003.20 : x
  2. Step 2: Convert to fraction form
    103,737.60/155,476.80 = 76,003.20/x
  3. Step 3: Cross multiply
    103,737.60x = 155,476.80 × 76,003.20
  4. Step 4: Simplify right side
    103,737.60x = 11,816,734,325.76
  5. Step 5: Solve for x
    x = 11,816,734,325.76/103,737.60
  6. Step 6: Final answer
    x = 113,909.85

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1.5x scale

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.