Home / 148,821.12-205,373.28-81,753.12

Finding the Fourth Proportional to 148,821.12, 205,373.28 and 81,753.12

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Solution

The fourth proportional to 148,821.12, 205,373.28 and 81,753.12 is: 112,819.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,821.12 : 205,373.28 = 81,753.12 : x
  2. Step 2: Convert to fraction form
    148,821.12/205,373.28 = 81,753.12/x
  3. Step 3: Cross multiply
    148,821.12x = 205,373.28 × 81,753.12
  4. Step 4: Simplify right side
    148,821.12x = 16,789,906,404.63
  5. Step 5: Solve for x
    x = 16,789,906,404.63/148,821.12
  6. Step 6: Final answer
    x = 112,819.38

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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.