Home / 111,930.91-154,475.55-83,587.39

Finding the Fourth Proportional to 111,930.91, 154,475.55 and 83,587.39

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Solution

The fourth proportional to 111,930.91, 154,475.55 and 83,587.39 is: 115,358.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,930.91 : 154,475.55 = 83,587.39 : x
  2. Step 2: Convert to fraction form
    111,930.91/154,475.55 = 83,587.39/x
  3. Step 3: Cross multiply
    111,930.91x = 154,475.55 × 83,587.39
  4. Step 4: Simplify right side
    111,930.91x = 12,912,207,657.13
  5. Step 5: Solve for x
    x = 12,912,207,657.13/111,930.91
  6. Step 6: Final answer
    x = 115,358.73

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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.