Home / 129,873.38-179,223.51-72,513.59

Finding the Fourth Proportional to 129,873.38, 179,223.51 and 72,513.59

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Solution

The fourth proportional to 129,873.38, 179,223.51 and 72,513.59 is: 100,067.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,873.38 : 179,223.51 = 72,513.59 : x
  2. Step 2: Convert to fraction form
    129,873.38/179,223.51 = 72,513.59/x
  3. Step 3: Cross multiply
    129,873.38x = 179,223.51 × 72,513.59
  4. Step 4: Simplify right side
    129,873.38x = 12,996,139,226.38
  5. Step 5: Solve for x
    x = 12,996,139,226.38/129,873.38
  6. Step 6: Final answer
    x = 100,067.77

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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.