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Finding the Fourth Proportional to 135,530.41, 187,037.90 and 75,100.90

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Solution

The fourth proportional to 135,530.41, 187,037.90 and 75,100.90 is: 103,642.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,530.41 : 187,037.90 = 75,100.90 : x
  2. Step 2: Convert to fraction form
    135,530.41/187,037.90 = 75,100.90/x
  3. Step 3: Cross multiply
    135,530.41x = 187,037.90 × 75,100.90
  4. Step 4: Simplify right side
    135,530.41x = 14,046,714,344.27
  5. Step 5: Solve for x
    x = 14,046,714,344.27/135,530.41
  6. Step 6: Final answer
    x = 103,642.53

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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.