Home / 127,728.24-176,264.88-71,139.52

Finding the Fourth Proportional to 127,728.24, 176,264.88 and 71,139.52

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Solution

The fourth proportional to 127,728.24, 176,264.88 and 71,139.52 is: 98,172.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,728.24 : 176,264.88 = 71,139.52 : x
  2. Step 2: Convert to fraction form
    127,728.24/176,264.88 = 71,139.52/x
  3. Step 3: Cross multiply
    127,728.24x = 176,264.88 × 71,139.52
  4. Step 4: Simplify right side
    127,728.24x = 12,539,398,956.06
  5. Step 5: Solve for x
    x = 12,539,398,956.06/127,728.24
  6. Step 6: Final answer
    x = 98,172.49

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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.