Home / 135,986.48-187,657.28-74,732.88

Finding the Fourth Proportional to 135,986.48, 187,657.28 and 74,732.88

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Solution

The fourth proportional to 135,986.48, 187,657.28 and 74,732.88 is: 103,129.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,986.48 : 187,657.28 = 74,732.88 : x
  2. Step 2: Convert to fraction form
    135,986.48/187,657.28 = 74,732.88/x
  3. Step 3: Cross multiply
    135,986.48x = 187,657.28 × 74,732.88
  4. Step 4: Simplify right side
    135,986.48x = 14,024,168,987.37
  5. Step 5: Solve for x
    x = 14,024,168,987.37/135,986.48
  6. Step 6: Final answer
    x = 103,129.14

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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.