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Finding the Fourth Proportional to 129,867.70, 194,801.55 and 82,866.10

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Solution

The fourth proportional to 129,867.70, 194,801.55 and 82,866.10 is: 124,299.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,867.70 : 194,801.55 = 82,866.10 : x
  2. Step 2: Convert to fraction form
    129,867.70/194,801.55 = 82,866.10/x
  3. Step 3: Cross multiply
    129,867.70x = 194,801.55 × 82,866.10
  4. Step 4: Simplify right side
    129,867.70x = 16,142,444,722.46
  5. Step 5: Solve for x
    x = 16,142,444,722.46/129,867.70
  6. Step 6: Final answer
    x = 124,299.15

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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.