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Finding the Fourth Proportional to 135,549.72, 187,055.92 and 75,119.11

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Solution

The fourth proportional to 135,549.72, 187,055.92 and 75,119.11 is: 103,662.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,549.72 : 187,055.92 = 75,119.11 : x
  2. Step 2: Convert to fraction form
    135,549.72/187,055.92 = 75,119.11/x
  3. Step 3: Cross multiply
    135,549.72x = 187,055.92 × 75,119.11
  4. Step 4: Simplify right side
    135,549.72x = 14,051,472,919.76
  5. Step 5: Solve for x
    x = 14,051,472,919.76/135,549.72
  6. Step 6: Final answer
    x = 103,662.87

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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.