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Finding the Fourth Proportional to 132,007.60, 197,865.60 and 72,885.70

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Solution

The fourth proportional to 132,007.60, 197,865.60 and 72,885.70 is: 109,248.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,007.60 : 197,865.60 = 72,885.70 : x
  2. Step 2: Convert to fraction form
    132,007.60/197,865.60 = 72,885.70/x
  3. Step 3: Cross multiply
    132,007.60x = 197,865.60 × 72,885.70
  4. Step 4: Simplify right side
    132,007.60x = 14,421,572,761.92
  5. Step 5: Solve for x
    x = 14,421,572,761.92/132,007.60
  6. Step 6: Final answer
    x = 109,248.05

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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.