Home / 129,160.60-178,240.66-71,805.15

Finding the Fourth Proportional to 129,160.60, 178,240.66 and 71,805.15

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Solution

The fourth proportional to 129,160.60, 178,240.66 and 71,805.15 is: 99,090.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,160.60 : 178,240.66 = 71,805.15 : x
  2. Step 2: Convert to fraction form
    129,160.60/178,240.66 = 71,805.15/x
  3. Step 3: Cross multiply
    129,160.60x = 178,240.66 × 71,805.15
  4. Step 4: Simplify right side
    129,160.60x = 12,798,597,147.89
  5. Step 5: Solve for x
    x = 12,798,597,147.89/129,160.60
  6. Step 6: Final answer
    x = 99,090.57

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1.5x scale

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.