Home / 129,708.12-178,997.10-70,092.12

Finding the Fourth Proportional to 129,708.12, 178,997.10 and 70,092.12

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Solution

The fourth proportional to 129,708.12, 178,997.10 and 70,092.12 is: 96,727.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,708.12 : 178,997.10 = 70,092.12 : x
  2. Step 2: Convert to fraction form
    129,708.12/178,997.10 = 70,092.12/x
  3. Step 3: Cross multiply
    129,708.12x = 178,997.10 × 70,092.12
  4. Step 4: Simplify right side
    129,708.12x = 12,546,286,212.85
  5. Step 5: Solve for x
    x = 12,546,286,212.85/129,708.12
  6. Step 6: Final answer
    x = 96,727.07

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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.