Home / 135,972.24-187,627.24-78,602.47

Finding the Fourth Proportional to 135,972.24, 187,627.24 and 78,602.47

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Solution

The fourth proportional to 135,972.24, 187,627.24 and 78,602.47 is: 108,463.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,972.24 : 187,627.24 = 78,602.47 : x
  2. Step 2: Convert to fraction form
    135,972.24/187,627.24 = 78,602.47/x
  3. Step 3: Cross multiply
    135,972.24x = 187,627.24 × 78,602.47
  4. Step 4: Simplify right side
    135,972.24x = 14,747,964,503.28
  5. Step 5: Solve for x
    x = 14,747,964,503.28/135,972.24
  6. Step 6: Final answer
    x = 108,463.05

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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.