Home / 135,909.12-187,548.20-75,483.66

Finding the Fourth Proportional to 135,909.12, 187,548.20 and 75,483.66

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Solution

The fourth proportional to 135,909.12, 187,548.20 and 75,483.66 is: 104,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,909.12 : 187,548.20 = 75,483.66 : x
  2. Step 2: Convert to fraction form
    135,909.12/187,548.20 = 75,483.66/x
  3. Step 3: Cross multiply
    135,909.12x = 187,548.20 × 75,483.66
  4. Step 4: Simplify right side
    135,909.12x = 14,156,824,562.41
  5. Step 5: Solve for x
    x = 14,156,824,562.41/135,909.12
  6. Step 6: Final answer
    x = 104,163.90

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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.