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Finding the Fourth Proportional to 161,789.88, 223,276.95 and 90,169.90

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Solution

The fourth proportional to 161,789.88, 223,276.95 and 90,169.90 is: 124,438.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,789.88 : 223,276.95 = 90,169.90 : x
  2. Step 2: Convert to fraction form
    161,789.88/223,276.95 = 90,169.90/x
  3. Step 3: Cross multiply
    161,789.88x = 223,276.95 × 90,169.90
  4. Step 4: Simplify right side
    161,789.88x = 20,132,860,253.81
  5. Step 5: Solve for x
    x = 20,132,860,253.81/161,789.88
  6. Step 6: Final answer
    x = 124,438.32

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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.