Home / 112,869.20-169,049.40-87,713.36

Finding the Fourth Proportional to 112,869.20, 169,049.40 and 87,713.36

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Solution

The fourth proportional to 112,869.20, 169,049.40 and 87,713.36 is: 131,372.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,869.20 : 169,049.40 = 87,713.36 : x
  2. Step 2: Convert to fraction form
    112,869.20/169,049.40 = 87,713.36/x
  3. Step 3: Cross multiply
    112,869.20x = 169,049.40 × 87,713.36
  4. Step 4: Simplify right side
    112,869.20x = 14,827,890,879.98
  5. Step 5: Solve for x
    x = 14,827,890,879.98/112,869.20
  6. Step 6: Final answer
    x = 131,372.34

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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.