Home / 129,618.82-178,897.17-75,900.70

Finding the Fourth Proportional to 129,618.82, 178,897.17 and 75,900.70

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Solution

The fourth proportional to 129,618.82, 178,897.17 and 75,900.70 is: 104,756.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,618.82 : 178,897.17 = 75,900.70 : x
  2. Step 2: Convert to fraction form
    129,618.82/178,897.17 = 75,900.70/x
  3. Step 3: Cross multiply
    129,618.82x = 178,897.17 × 75,900.70
  4. Step 4: Simplify right side
    129,618.82x = 13,578,420,431.02
  5. Step 5: Solve for x
    x = 13,578,420,431.02/129,618.82
  6. Step 6: Final answer
    x = 104,756.55

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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.