Home / 129,181.26-178,275.42-72,592.50

Finding the Fourth Proportional to 129,181.26, 178,275.42 and 72,592.50

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Solution

The fourth proportional to 129,181.26, 178,275.42 and 72,592.50 is: 100,180.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,181.26 : 178,275.42 = 72,592.50 : x
  2. Step 2: Convert to fraction form
    129,181.26/178,275.42 = 72,592.50/x
  3. Step 3: Cross multiply
    129,181.26x = 178,275.42 × 72,592.50
  4. Step 4: Simplify right side
    129,181.26x = 12,941,458,426.35
  5. Step 5: Solve for x
    x = 12,941,458,426.35/129,181.26
  6. Step 6: Final answer
    x = 100,180.62

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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.