Home / 135,534.20-187,038.29-75,105.85

Finding the Fourth Proportional to 135,534.20, 187,038.29 and 75,105.85

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Solution

The fourth proportional to 135,534.20, 187,038.29 and 75,105.85 is: 103,646.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,534.20 : 187,038.29 = 75,105.85 : x
  2. Step 2: Convert to fraction form
    135,534.20/187,038.29 = 75,105.85/x
  3. Step 3: Cross multiply
    135,534.20x = 187,038.29 × 75,105.85
  4. Step 4: Simplify right side
    135,534.20x = 14,047,669,473.17
  5. Step 5: Solve for x
    x = 14,047,669,473.17/135,534.20
  6. Step 6: Final answer
    x = 103,646.68

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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.