Home / 129,561.45-194,398.61-45,382.11

Finding the Fourth Proportional to 129,561.45, 194,398.61 and 45,382.11

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Solution

The fourth proportional to 129,561.45, 194,398.61 and 45,382.11 is: 68,092.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,561.45 : 194,398.61 = 45,382.11 : x
  2. Step 2: Convert to fraction form
    129,561.45/194,398.61 = 45,382.11/x
  3. Step 3: Cross multiply
    129,561.45x = 194,398.61 × 45,382.11
  4. Step 4: Simplify right side
    129,561.45x = 8,822,218,875.96
  5. Step 5: Solve for x
    x = 8,822,218,875.96/129,561.45
  6. Step 6: Final answer
    x = 68,092.93

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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.