Home / 135,175.28-186,539.15-74,748.47

Finding the Fourth Proportional to 135,175.28, 186,539.15 and 74,748.47

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Solution

The fourth proportional to 135,175.28, 186,539.15 and 74,748.47 is: 103,151.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,175.28 : 186,539.15 = 74,748.47 : x
  2. Step 2: Convert to fraction form
    135,175.28/186,539.15 = 74,748.47/x
  3. Step 3: Cross multiply
    135,175.28x = 186,539.15 × 74,748.47
  4. Step 4: Simplify right side
    135,175.28x = 13,943,515,311.78
  5. Step 5: Solve for x
    x = 13,943,515,311.78/135,175.28
  6. Step 6: Final answer
    x = 103,151.37

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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.