Home / 129,129.56-193,442.11-72,799.29

Finding the Fourth Proportional to 129,129.56, 193,442.11 and 72,799.29

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Solution

The fourth proportional to 129,129.56, 193,442.11 and 72,799.29 is: 109,056.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,129.56 : 193,442.11 = 72,799.29 : x
  2. Step 2: Convert to fraction form
    129,129.56/193,442.11 = 72,799.29/x
  3. Step 3: Cross multiply
    129,129.56x = 193,442.11 × 72,799.29
  4. Step 4: Simplify right side
    129,129.56x = 14,082,448,082.10
  5. Step 5: Solve for x
    x = 14,082,448,082.10/129,129.56
  6. Step 6: Final answer
    x = 109,056.74

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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.