Home / 129,184.57-178,323.42-75,487.04

Finding the Fourth Proportional to 129,184.57, 178,323.42 and 75,487.04

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Solution

The fourth proportional to 129,184.57, 178,323.42 and 75,487.04 is: 104,200.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,184.57 : 178,323.42 = 75,487.04 : x
  2. Step 2: Convert to fraction form
    129,184.57/178,323.42 = 75,487.04/x
  3. Step 3: Cross multiply
    129,184.57x = 178,323.42 × 75,487.04
  4. Step 4: Simplify right side
    129,184.57x = 13,461,107,198.65
  5. Step 5: Solve for x
    x = 13,461,107,198.65/129,184.57
  6. Step 6: Final answer
    x = 104,200.58

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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.