Home / 115,427.28-159,197.32-79,609.04

Finding the Fourth Proportional to 115,427.28, 159,197.32 and 79,609.04

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Solution

The fourth proportional to 115,427.28, 159,197.32 and 79,609.04 is: 109,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,427.28 : 159,197.32 = 79,609.04 : x
  2. Step 2: Convert to fraction form
    115,427.28/159,197.32 = 79,609.04/x
  3. Step 3: Cross multiply
    115,427.28x = 159,197.32 × 79,609.04
  4. Step 4: Simplify right side
    115,427.28x = 12,673,545,815.77
  5. Step 5: Solve for x
    x = 12,673,545,815.77/115,427.28
  6. Step 6: Final answer
    x = 109,796.80

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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.