Home / 115,456.40-159,439.87-109,166.39

Finding the Fourth Proportional to 115,456.40, 159,439.87 and 109,166.39

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Solution

The fourth proportional to 115,456.40, 159,439.87 and 109,166.39 is: 150,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,456.40 : 159,439.87 = 109,166.39 : x
  2. Step 2: Convert to fraction form
    115,456.40/159,439.87 = 109,166.39/x
  3. Step 3: Cross multiply
    115,456.40x = 159,439.87 × 109,166.39
  4. Step 4: Simplify right side
    115,456.40x = 17,405,474,232.77
  5. Step 5: Solve for x
    x = 17,405,474,232.77/115,456.40
  6. Step 6: Final answer
    x = 150,753.65

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1.5x scale

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.