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Finding the Fourth Proportional to 126,165.78, 188,870.58 and 121,679.58

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Solution

The fourth proportional to 126,165.78, 188,870.58 and 121,679.58 is: 182,154.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,165.78 : 188,870.58 = 121,679.58 : x
  2. Step 2: Convert to fraction form
    126,165.78/188,870.58 = 121,679.58/x
  3. Step 3: Cross multiply
    126,165.78x = 188,870.58 × 121,679.58
  4. Step 4: Simplify right side
    126,165.78x = 22,981,692,848.76
  5. Step 5: Solve for x
    x = 22,981,692,848.76/126,165.78
  6. Step 6: Final answer
    x = 182,154.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.