Home / 135,574.35-187,079.45-75,143.76

Finding the Fourth Proportional to 135,574.35, 187,079.45 and 75,143.76

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Solution

The fourth proportional to 135,574.35, 187,079.45 and 75,143.76 is: 103,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,574.35 : 187,079.45 = 75,143.76 : x
  2. Step 2: Convert to fraction form
    135,574.35/187,079.45 = 75,143.76/x
  3. Step 3: Cross multiply
    135,574.35x = 187,079.45 × 75,143.76
  4. Step 4: Simplify right side
    135,574.35x = 14,057,853,291.73
  5. Step 5: Solve for x
    x = 14,057,853,291.73/135,574.35
  6. Step 6: Final answer
    x = 103,691.10

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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.