Home / 129,421.45-178,574.04-75,695.97

Finding the Fourth Proportional to 129,421.45, 178,574.04 and 75,695.97

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Solution

The fourth proportional to 129,421.45, 178,574.04 and 75,695.97 is: 104,444.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,421.45 : 178,574.04 = 75,695.97 : x
  2. Step 2: Convert to fraction form
    129,421.45/178,574.04 = 75,695.97/x
  3. Step 3: Cross multiply
    129,421.45x = 178,574.04 × 75,695.97
  4. Step 4: Simplify right side
    129,421.45x = 13,517,335,174.62
  5. Step 5: Solve for x
    x = 13,517,335,174.62/129,421.45
  6. Step 6: Final answer
    x = 104,444.32

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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.