Home / 129,402.55-178,574.25-75,677.41

Finding the Fourth Proportional to 129,402.55, 178,574.25 and 75,677.41

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Solution

The fourth proportional to 129,402.55, 178,574.25 and 75,677.41 is: 104,434.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,402.55 : 178,574.25 = 75,677.41 : x
  2. Step 2: Convert to fraction form
    129,402.55/178,574.25 = 75,677.41/x
  3. Step 3: Cross multiply
    129,402.55x = 178,574.25 × 75,677.41
  4. Step 4: Simplify right side
    129,402.55x = 13,514,036,732.69
  5. Step 5: Solve for x
    x = 13,514,036,732.69/129,402.55
  6. Step 6: Final answer
    x = 104,434.08

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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.