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Finding the Fourth Proportional to 141,885.61, 212,961.27 and 71,814.13

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Solution

The fourth proportional to 141,885.61, 212,961.27 and 71,814.13 is: 107,788.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,885.61 : 212,961.27 = 71,814.13 : x
  2. Step 2: Convert to fraction form
    141,885.61/212,961.27 = 71,814.13/x
  3. Step 3: Cross multiply
    141,885.61x = 212,961.27 × 71,814.13
  4. Step 4: Simplify right side
    141,885.61x = 15,293,628,328.75
  5. Step 5: Solve for x
    x = 15,293,628,328.75/141,885.61
  6. Step 6: Final answer
    x = 107,788.44

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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.