Home / 121,721.49-168,022.54-108,952.15

Finding the Fourth Proportional to 121,721.49, 168,022.54 and 108,952.15

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Solution

The fourth proportional to 121,721.49, 168,022.54 and 108,952.15 is: 150,395.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,721.49 : 168,022.54 = 108,952.15 : x
  2. Step 2: Convert to fraction form
    121,721.49/168,022.54 = 108,952.15/x
  3. Step 3: Cross multiply
    121,721.49x = 168,022.54 × 108,952.15
  4. Step 4: Simplify right side
    121,721.49x = 18,306,416,981.46
  5. Step 5: Solve for x
    x = 18,306,416,981.46/121,721.49
  6. Step 6: Final answer
    x = 150,395.93

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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.