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Finding the Fourth Proportional to 83,146.14, 124,719.21 and 30,532.86

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Solution

The fourth proportional to 83,146.14, 124,719.21 and 30,532.86 is: 45,799.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,146.14 : 124,719.21 = 30,532.86 : x
  2. Step 2: Convert to fraction form
    83,146.14/124,719.21 = 30,532.86/x
  3. Step 3: Cross multiply
    83,146.14x = 124,719.21 × 30,532.86
  4. Step 4: Simplify right side
    83,146.14x = 3,808,034,178.24
  5. Step 5: Solve for x
    x = 3,808,034,178.24/83,146.14
  6. Step 6: Final answer
    x = 45,799.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.