Home / 107,721.68-148,680.60-69,930.32

Finding the Fourth Proportional to 107,721.68, 148,680.60 and 69,930.32

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Solution

The fourth proportional to 107,721.68, 148,680.60 and 69,930.32 is: 96,519.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,721.68 : 148,680.60 = 69,930.32 : x
  2. Step 2: Convert to fraction form
    107,721.68/148,680.60 = 69,930.32/x
  3. Step 3: Cross multiply
    107,721.68x = 148,680.60 × 69,930.32
  4. Step 4: Simplify right side
    107,721.68x = 10,397,281,935.79
  5. Step 5: Solve for x
    x = 10,397,281,935.79/107,721.68
  6. Step 6: Final answer
    x = 96,519.86

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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.