Home / 148,500.16-204,929.92-81,432

Finding the Fourth Proportional to 148,500.16, 204,929.92 and 81,432

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Solution

The fourth proportional to 148,500.16, 204,929.92 and 81,432 is: 112,376.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,500.16 : 204,929.92 = 81,432 : x
  2. Step 2: Convert to fraction form
    148,500.16/204,929.92 = 81,432/x
  3. Step 3: Cross multiply
    148,500.16x = 204,929.92 × 81,432
  4. Step 4: Simplify right side
    148,500.16x = 16,687,853,245.44
  5. Step 5: Solve for x
    x = 16,687,853,245.44/148,500.16
  6. Step 6: Final answer
    x = 112,376.00

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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.