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Finding the Fourth Proportional to 141,883.61, 212,958.27 and 71,812.13

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Solution

The fourth proportional to 141,883.61, 212,958.27 and 71,812.13 is: 107,785.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,883.61 : 212,958.27 = 71,812.13 : x
  2. Step 2: Convert to fraction form
    141,883.61/212,958.27 = 71,812.13/x
  3. Step 3: Cross multiply
    141,883.61x = 212,958.27 × 71,812.13
  4. Step 4: Simplify right side
    141,883.61x = 15,292,985,905.02
  5. Step 5: Solve for x
    x = 15,292,985,905.02/141,883.61
  6. Step 6: Final answer
    x = 107,785.43

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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.