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Finding the Fourth Proportional to 127,466.80, 191,200.20 and 80,772.40

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Solution

The fourth proportional to 127,466.80, 191,200.20 and 80,772.40 is: 121,158.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,466.80 : 191,200.20 = 80,772.40 : x
  2. Step 2: Convert to fraction form
    127,466.80/191,200.20 = 80,772.40/x
  3. Step 3: Cross multiply
    127,466.80x = 191,200.20 × 80,772.40
  4. Step 4: Simplify right side
    127,466.80x = 15,443,699,034.48
  5. Step 5: Solve for x
    x = 15,443,699,034.48/127,466.80
  6. Step 6: Final answer
    x = 121,158.60

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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.