Home / 161,761.41-223,227.69-90,139.86

Finding the Fourth Proportional to 161,761.41, 223,227.69 and 90,139.86

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Solution

The fourth proportional to 161,761.41, 223,227.69 and 90,139.86 is: 124,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,761.41 : 223,227.69 = 90,139.86 : x
  2. Step 2: Convert to fraction form
    161,761.41/223,227.69 = 90,139.86/x
  3. Step 3: Cross multiply
    161,761.41x = 223,227.69 × 90,139.86
  4. Step 4: Simplify right side
    161,761.41x = 20,121,712,724.72
  5. Step 5: Solve for x
    x = 20,121,712,724.72/161,761.41
  6. Step 6: Final answer
    x = 124,391.30

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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.