Home / 136,801.32-188,793.38-76,372.45

Finding the Fourth Proportional to 136,801.32, 188,793.38 and 76,372.45

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Solution

The fourth proportional to 136,801.32, 188,793.38 and 76,372.45 is: 105,398.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,801.32 : 188,793.38 = 76,372.45 : x
  2. Step 2: Convert to fraction form
    136,801.32/188,793.38 = 76,372.45/x
  3. Step 3: Cross multiply
    136,801.32x = 188,793.38 × 76,372.45
  4. Step 4: Simplify right side
    136,801.32x = 14,418,612,693.33
  5. Step 5: Solve for x
    x = 14,418,612,693.33/136,801.32
  6. Step 6: Final answer
    x = 105,398.20

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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.