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Finding the Fourth Proportional to 132,403.50, 182,717.10 and 72,787.50

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Solution

The fourth proportional to 132,403.50, 182,717.10 and 72,787.50 is: 100,446.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,403.50 : 182,717.10 = 72,787.50 : x
  2. Step 2: Convert to fraction form
    132,403.50/182,717.10 = 72,787.50/x
  3. Step 3: Cross multiply
    132,403.50x = 182,717.10 × 72,787.50
  4. Step 4: Simplify right side
    132,403.50x = 13,299,520,916.25
  5. Step 5: Solve for x
    x = 13,299,520,916.25/132,403.50
  6. Step 6: Final answer
    x = 100,446.90

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1.5x scale

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.