Home / 121,432.40-182,148.60-81,774.80

Finding the Fourth Proportional to 121,432.40, 182,148.60 and 81,774.80

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Solution

The fourth proportional to 121,432.40, 182,148.60 and 81,774.80 is: 122,662.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,432.40 : 182,148.60 = 81,774.80 : x
  2. Step 2: Convert to fraction form
    121,432.40/182,148.60 = 81,774.80/x
  3. Step 3: Cross multiply
    121,432.40x = 182,148.60 × 81,774.80
  4. Step 4: Simplify right side
    121,432.40x = 14,895,165,335.28
  5. Step 5: Solve for x
    x = 14,895,165,335.28/121,432.40
  6. Step 6: Final answer
    x = 122,662.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.