Home / 129,761.56-179,070.96-70,145.56

Finding the Fourth Proportional to 129,761.56, 179,070.96 and 70,145.56

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Solution

The fourth proportional to 129,761.56, 179,070.96 and 70,145.56 is: 96,800.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,761.56 : 179,070.96 = 70,145.56 : x
  2. Step 2: Convert to fraction form
    129,761.56/179,070.96 = 70,145.56/x
  3. Step 3: Cross multiply
    129,761.56x = 179,070.96 × 70,145.56
  4. Step 4: Simplify right side
    129,761.56x = 12,561,032,768.94
  5. Step 5: Solve for x
    x = 12,561,032,768.94/129,761.56
  6. Step 6: Final answer
    x = 96,800.88

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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.