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Finding the Fourth Proportional to 141,883.80, 212,717.70 and 71,813.40

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Solution

The fourth proportional to 141,883.80, 212,717.70 and 71,813.40 is: 107,665.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,883.80 : 212,717.70 = 71,813.40 : x
  2. Step 2: Convert to fraction form
    141,883.80/212,717.70 = 71,813.40/x
  3. Step 3: Cross multiply
    141,883.80x = 212,717.70 × 71,813.40
  4. Step 4: Simplify right side
    141,883.80x = 15,275,981,277.18
  5. Step 5: Solve for x
    x = 15,275,981,277.18/141,883.80
  6. Step 6: Final answer
    x = 107,665.44

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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.