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Finding the Fourth Proportional to 135,900.96, 187,549.54 and 75,471.87

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Solution

The fourth proportional to 135,900.96, 187,549.54 and 75,471.87 is: 104,154.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,900.96 : 187,549.54 = 75,471.87 : x
  2. Step 2: Convert to fraction form
    135,900.96/187,549.54 = 75,471.87/x
  3. Step 3: Cross multiply
    135,900.96x = 187,549.54 × 75,471.87
  4. Step 4: Simplify right side
    135,900.96x = 14,154,714,385.63
  5. Step 5: Solve for x
    x = 14,154,714,385.63/135,900.96
  6. Step 6: Final answer
    x = 104,154.63

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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.