Home / 127,728.80-176,271.18-71,140.17

Finding the Fourth Proportional to 127,728.80, 176,271.18 and 71,140.17

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Solution

The fourth proportional to 127,728.80, 176,271.18 and 71,140.17 is: 98,176.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,728.80 : 176,271.18 = 71,140.17 : x
  2. Step 2: Convert to fraction form
    127,728.80/176,271.18 = 71,140.17/x
  3. Step 3: Cross multiply
    127,728.80x = 176,271.18 × 71,140.17
  4. Step 4: Simplify right side
    127,728.80x = 12,539,961,711.30
  5. Step 5: Solve for x
    x = 12,539,961,711.30/127,728.80
  6. Step 6: Final answer
    x = 98,176.47

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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.