Home / 121,974.12-168,329.46-75,417.12

Finding the Fourth Proportional to 121,974.12, 168,329.46 and 75,417.12

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Solution

The fourth proportional to 121,974.12, 168,329.46 and 75,417.12 is: 104,078.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,974.12 : 168,329.46 = 75,417.12 : x
  2. Step 2: Convert to fraction form
    121,974.12/168,329.46 = 75,417.12/x
  3. Step 3: Cross multiply
    121,974.12x = 168,329.46 × 75,417.12
  4. Step 4: Simplify right side
    121,974.12x = 12,694,923,084.36
  5. Step 5: Solve for x
    x = 12,694,923,084.36/121,974.12
  6. Step 6: Final answer
    x = 104,078.82

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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.