Home / 129,132.74-178,194.56-71,768.34

Finding the Fourth Proportional to 129,132.74, 178,194.56 and 71,768.34

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Solution

The fourth proportional to 129,132.74, 178,194.56 and 71,768.34 is: 99,035.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,132.74 : 178,194.56 = 71,768.34 : x
  2. Step 2: Convert to fraction form
    129,132.74/178,194.56 = 71,768.34/x
  3. Step 3: Cross multiply
    129,132.74x = 178,194.56 × 71,768.34
  4. Step 4: Simplify right side
    129,132.74x = 12,788,727,861.82
  5. Step 5: Solve for x
    x = 12,788,727,861.82/129,132.74
  6. Step 6: Final answer
    x = 99,035.52

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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.