Home / 121,171.28-167,356.32-80,814.92

Finding the Fourth Proportional to 121,171.28, 167,356.32 and 80,814.92

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Solution

The fourth proportional to 121,171.28, 167,356.32 and 80,814.92 is: 111,617.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,171.28 : 167,356.32 = 80,814.92 : x
  2. Step 2: Convert to fraction form
    121,171.28/167,356.32 = 80,814.92/x
  3. Step 3: Cross multiply
    121,171.28x = 167,356.32 × 80,814.92
  4. Step 4: Simplify right side
    121,171.28x = 13,524,887,612.29
  5. Step 5: Solve for x
    x = 13,524,887,612.29/121,171.28
  6. Step 6: Final answer
    x = 111,617.93

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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.