Home / 101,543.12-152,049.72-81,713.36

Finding the Fourth Proportional to 101,543.12, 152,049.72 and 81,713.36

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Solution

The fourth proportional to 101,543.12, 152,049.72 and 81,713.36 is: 122,356.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,543.12 : 152,049.72 = 81,713.36 : x
  2. Step 2: Convert to fraction form
    101,543.12/152,049.72 = 81,713.36/x
  3. Step 3: Cross multiply
    101,543.12x = 152,049.72 × 81,713.36
  4. Step 4: Simplify right side
    101,543.12x = 12,424,493,508.26
  5. Step 5: Solve for x
    x = 12,424,493,508.26/101,543.12
  6. Step 6: Final answer
    x = 122,356.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.