Home / 127,860.16-176,442.96-80,139.28

Finding the Fourth Proportional to 127,860.16, 176,442.96 and 80,139.28

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Solution

The fourth proportional to 127,860.16, 176,442.96 and 80,139.28 is: 110,589.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,860.16 : 176,442.96 = 80,139.28 : x
  2. Step 2: Convert to fraction form
    127,860.16/176,442.96 = 80,139.28/x
  3. Step 3: Cross multiply
    127,860.16x = 176,442.96 × 80,139.28
  4. Step 4: Simplify right side
    127,860.16x = 14,140,011,775.47
  5. Step 5: Solve for x
    x = 14,140,011,775.47/127,860.16
  6. Step 6: Final answer
    x = 110,589.66

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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.