Home / 135,604.47-187,116.85-75,174.55

Finding the Fourth Proportional to 135,604.47, 187,116.85 and 75,174.55

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Solution

The fourth proportional to 135,604.47, 187,116.85 and 75,174.55 is: 103,731.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,604.47 : 187,116.85 = 75,174.55 : x
  2. Step 2: Convert to fraction form
    135,604.47/187,116.85 = 75,174.55/x
  3. Step 3: Cross multiply
    135,604.47x = 187,116.85 × 75,174.55
  4. Step 4: Simplify right side
    135,604.47x = 14,066,424,996.17
  5. Step 5: Solve for x
    x = 14,066,424,996.17/135,604.47
  6. Step 6: Final answer
    x = 103,731.28

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1.5x scale

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.