Home / 135,987.19-187,665.66-74,732.56

Finding the Fourth Proportional to 135,987.19, 187,665.66 and 74,732.56

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Solution

The fourth proportional to 135,987.19, 187,665.66 and 74,732.56 is: 103,132.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,987.19 : 187,665.66 = 74,732.56 : x
  2. Step 2: Convert to fraction form
    135,987.19/187,665.66 = 74,732.56/x
  3. Step 3: Cross multiply
    135,987.19x = 187,665.66 × 74,732.56
  4. Step 4: Simplify right side
    135,987.19x = 14,024,734,726.73
  5. Step 5: Solve for x
    x = 14,024,734,726.73/135,987.19
  6. Step 6: Final answer
    x = 103,132.77

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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.