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Finding the Fourth Proportional to 141,863.20, 212,794.80 and 129,882.40

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Solution

The fourth proportional to 141,863.20, 212,794.80 and 129,882.40 is: 194,823.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,863.20 : 212,794.80 = 129,882.40 : x
  2. Step 2: Convert to fraction form
    141,863.20/212,794.80 = 129,882.40/x
  3. Step 3: Cross multiply
    141,863.20x = 212,794.80 × 129,882.40
  4. Step 4: Simplify right side
    141,863.20x = 27,638,299,331.52
  5. Step 5: Solve for x
    x = 27,638,299,331.52/141,863.20
  6. Step 6: Final answer
    x = 194,823.60

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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.