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Finding the Fourth Proportional to 129,765.92, 179,077.11 and 76,040.24

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Solution

The fourth proportional to 129,765.92, 179,077.11 and 76,040.24 is: 104,935.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,765.92 : 179,077.11 = 76,040.24 : x
  2. Step 2: Convert to fraction form
    129,765.92/179,077.11 = 76,040.24/x
  3. Step 3: Cross multiply
    129,765.92x = 179,077.11 × 76,040.24
  4. Step 4: Simplify right side
    129,765.92x = 13,617,066,422.91
  5. Step 5: Solve for x
    x = 13,617,066,422.91/129,765.92
  6. Step 6: Final answer
    x = 104,935.61

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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.