Home / 120,839.28-166,711.68-89,083.68

Finding the Fourth Proportional to 120,839.28, 166,711.68 and 89,083.68

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Solution

The fourth proportional to 120,839.28, 166,711.68 and 89,083.68 is: 122,901.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,839.28 : 166,711.68 = 89,083.68 : x
  2. Step 2: Convert to fraction form
    120,839.28/166,711.68 = 89,083.68/x
  3. Step 3: Cross multiply
    120,839.28x = 166,711.68 × 89,083.68
  4. Step 4: Simplify right side
    120,839.28x = 14,851,289,953.38
  5. Step 5: Solve for x
    x = 14,851,289,953.38/120,839.28
  6. Step 6: Final answer
    x = 122,901.18

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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.