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Finding the Fourth Proportional to 132,572.72, 182,948 and 72,141.32

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Solution

The fourth proportional to 132,572.72, 182,948 and 72,141.32 is: 99,553.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,572.72 : 182,948 = 72,141.32 : x
  2. Step 2: Convert to fraction form
    132,572.72/182,948 = 72,141.32/x
  3. Step 3: Cross multiply
    132,572.72x = 182,948 × 72,141.32
  4. Step 4: Simplify right side
    132,572.72x = 13,198,110,211.36
  5. Step 5: Solve for x
    x = 13,198,110,211.36/132,572.72
  6. Step 6: Final answer
    x = 99,553.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.