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Finding the Fourth Proportional to 141,792.40, 212,251.20 and 82,451.80

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Solution

The fourth proportional to 141,792.40, 212,251.20 and 82,451.80 is: 123,423.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,792.40 : 212,251.20 = 82,451.80 : x
  2. Step 2: Convert to fraction form
    141,792.40/212,251.20 = 82,451.80/x
  3. Step 3: Cross multiply
    141,792.40x = 212,251.20 × 82,451.80
  4. Step 4: Simplify right side
    141,792.40x = 17,500,493,492.16
  5. Step 5: Solve for x
    x = 17,500,493,492.16/141,792.40
  6. Step 6: Final answer
    x = 123,423.35

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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.