Home / 129,180.06-178,433.82-98,780.76

Finding the Fourth Proportional to 129,180.06, 178,433.82 and 98,780.76

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Solution

The fourth proportional to 129,180.06, 178,433.82 and 98,780.76 is: 136,443.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,180.06 : 178,433.82 = 98,780.76 : x
  2. Step 2: Convert to fraction form
    129,180.06/178,433.82 = 98,780.76/x
  3. Step 3: Cross multiply
    129,180.06x = 178,433.82 × 98,780.76
  4. Step 4: Simplify right side
    129,180.06x = 17,625,828,349.30
  5. Step 5: Solve for x
    x = 17,625,828,349.30/129,180.06
  6. Step 6: Final answer
    x = 136,443.88

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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.