Home / 129,226.20-178,306-75,500.82

Finding the Fourth Proportional to 129,226.20, 178,306 and 75,500.82

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Solution

The fourth proportional to 129,226.20, 178,306 and 75,500.82 is: 104,175.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,226.20 : 178,306 = 75,500.82 : x
  2. Step 2: Convert to fraction form
    129,226.20/178,306 = 75,500.82/x
  3. Step 3: Cross multiply
    129,226.20x = 178,306 × 75,500.82
  4. Step 4: Simplify right side
    129,226.20x = 13,462,249,210.92
  5. Step 5: Solve for x
    x = 13,462,249,210.92/129,226.20
  6. Step 6: Final answer
    x = 104,175.85

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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.