Home / 135,540.44-187,053-75,117.68

Finding the Fourth Proportional to 135,540.44, 187,053 and 75,117.68

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Solution

The fourth proportional to 135,540.44, 187,053 and 75,117.68 is: 103,666.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,540.44 : 187,053 = 75,117.68 : x
  2. Step 2: Convert to fraction form
    135,540.44/187,053 = 75,117.68/x
  3. Step 3: Cross multiply
    135,540.44x = 187,053 × 75,117.68
  4. Step 4: Simplify right side
    135,540.44x = 14,050,987,397.04
  5. Step 5: Solve for x
    x = 14,050,987,397.04/135,540.44
  6. Step 6: Final answer
    x = 103,666.38

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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.