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Finding the Fourth Proportional to 142,405.92, 213,737.28 and 75,901.44

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Solution

The fourth proportional to 142,405.92, 213,737.28 and 75,901.44 is: 113,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,405.92 : 213,737.28 = 75,901.44 : x
  2. Step 2: Convert to fraction form
    142,405.92/213,737.28 = 75,901.44/x
  3. Step 3: Cross multiply
    142,405.92x = 213,737.28 × 75,901.44
  4. Step 4: Simplify right side
    142,405.92x = 16,222,967,333.68
  5. Step 5: Solve for x
    x = 16,222,967,333.68/142,405.92
  6. Step 6: Final answer
    x = 113,920.60

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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.