Home / 135,555.11-187,067.42-75,127.08

Finding the Fourth Proportional to 135,555.11, 187,067.42 and 75,127.08

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Solution

The fourth proportional to 135,555.11, 187,067.42 and 75,127.08 is: 103,676.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,555.11 : 187,067.42 = 75,127.08 : x
  2. Step 2: Convert to fraction form
    135,555.11/187,067.42 = 75,127.08/x
  3. Step 3: Cross multiply
    135,555.11x = 187,067.42 × 75,127.08
  4. Step 4: Simplify right side
    135,555.11x = 14,053,829,215.55
  5. Step 5: Solve for x
    x = 14,053,829,215.55/135,555.11
  6. Step 6: Final answer
    x = 103,676.13

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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.