Home / 121,432.60-182,148.90-38,315.80

Finding the Fourth Proportional to 121,432.60, 182,148.90 and 38,315.80

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Solution

The fourth proportional to 121,432.60, 182,148.90 and 38,315.80 is: 57,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,432.60 : 182,148.90 = 38,315.80 : x
  2. Step 2: Convert to fraction form
    121,432.60/182,148.90 = 38,315.80/x
  3. Step 3: Cross multiply
    121,432.60x = 182,148.90 × 38,315.80
  4. Step 4: Simplify right side
    121,432.60x = 6,979,180,822.62
  5. Step 5: Solve for x
    x = 6,979,180,822.62/121,432.60
  6. Step 6: Final answer
    x = 57,473.70

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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.