Home / 159,726.08-220,432-91,764.16

Finding the Fourth Proportional to 159,726.08, 220,432 and 91,764.16

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Solution

The fourth proportional to 159,726.08, 220,432 and 91,764.16 is: 126,640.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,726.08 : 220,432 = 91,764.16 : x
  2. Step 2: Convert to fraction form
    159,726.08/220,432 = 91,764.16/x
  3. Step 3: Cross multiply
    159,726.08x = 220,432 × 91,764.16
  4. Step 4: Simplify right side
    159,726.08x = 20,227,757,317.12
  5. Step 5: Solve for x
    x = 20,227,757,317.12/159,726.08
  6. Step 6: Final answer
    x = 126,640.29

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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.