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Finding the Fourth Proportional to 119,143.39, 164,326.78 and 80,932.40

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Solution

The fourth proportional to 119,143.39, 164,326.78 and 80,932.40 is: 111,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,143.39 : 164,326.78 = 80,932.40 : x
  2. Step 2: Convert to fraction form
    119,143.39/164,326.78 = 80,932.40/x
  3. Step 3: Cross multiply
    119,143.39x = 164,326.78 × 80,932.40
  4. Step 4: Simplify right side
    119,143.39x = 13,299,360,823.44
  5. Step 5: Solve for x
    x = 13,299,360,823.44/119,143.39
  6. Step 6: Final answer
    x = 111,624.83

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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.