Home / 123,419.70-170,318.89-66,831.07

Finding the Fourth Proportional to 123,419.70, 170,318.89 and 66,831.07

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Solution

The fourth proportional to 123,419.70, 170,318.89 and 66,831.07 is: 92,226.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,419.70 : 170,318.89 = 66,831.07 : x
  2. Step 2: Convert to fraction form
    123,419.70/170,318.89 = 66,831.07/x
  3. Step 3: Cross multiply
    123,419.70x = 170,318.89 × 66,831.07
  4. Step 4: Simplify right side
    123,419.70x = 11,382,593,659.91
  5. Step 5: Solve for x
    x = 11,382,593,659.91/123,419.70
  6. Step 6: Final answer
    x = 92,226.72

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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.