Home / 127,729.42-176,264.85-71,141.20

Finding the Fourth Proportional to 127,729.42, 176,264.85 and 71,141.20

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Solution

The fourth proportional to 127,729.42, 176,264.85 and 71,141.20 is: 98,173.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,729.42 : 176,264.85 = 71,141.20 : x
  2. Step 2: Convert to fraction form
    127,729.42/176,264.85 = 71,141.20/x
  3. Step 3: Cross multiply
    127,729.42x = 176,264.85 × 71,141.20
  4. Step 4: Simplify right side
    127,729.42x = 12,539,692,946.82
  5. Step 5: Solve for x
    x = 12,539,692,946.82/127,729.42
  6. Step 6: Final answer
    x = 98,173.88

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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.