Home / 127,728.42-176,263.47-71,140.20

Finding the Fourth Proportional to 127,728.42, 176,263.47 and 71,140.20

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Solution

The fourth proportional to 127,728.42, 176,263.47 and 71,140.20 is: 98,172.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,728.42 : 176,263.47 = 71,140.20 : x
  2. Step 2: Convert to fraction form
    127,728.42/176,263.47 = 71,140.20/x
  3. Step 3: Cross multiply
    127,728.42x = 176,263.47 × 71,140.20
  4. Step 4: Simplify right side
    127,728.42x = 12,539,418,508.49
  5. Step 5: Solve for x
    x = 12,539,418,508.49/127,728.42
  6. Step 6: Final answer
    x = 98,172.50

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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.