Home / 129,700.71-178,986.11-75,974.22

Finding the Fourth Proportional to 129,700.71, 178,986.11 and 75,974.22

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Solution

The fourth proportional to 129,700.71, 178,986.11 and 75,974.22 is: 104,843.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,700.71 : 178,986.11 = 75,974.22 : x
  2. Step 2: Convert to fraction form
    129,700.71/178,986.11 = 75,974.22/x
  3. Step 3: Cross multiply
    129,700.71x = 178,986.11 × 75,974.22
  4. Step 4: Simplify right side
    129,700.71x = 13,598,329,718.21
  5. Step 5: Solve for x
    x = 13,598,329,718.21/129,700.71
  6. Step 6: Final answer
    x = 104,843.91

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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.