Home / 161,691.38-223,119.63-90,069.86

Finding the Fourth Proportional to 161,691.38, 223,119.63 and 90,069.86

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Solution

The fourth proportional to 161,691.38, 223,119.63 and 90,069.86 is: 124,288.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,691.38 : 223,119.63 = 90,069.86 : x
  2. Step 2: Convert to fraction form
    161,691.38/223,119.63 = 90,069.86/x
  3. Step 3: Cross multiply
    161,691.38x = 223,119.63 × 90,069.86
  4. Step 4: Simplify right side
    161,691.38x = 20,096,354,395.15
  5. Step 5: Solve for x
    x = 20,096,354,395.15/161,691.38
  6. Step 6: Final answer
    x = 124,288.35

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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.