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Finding the Fourth Proportional to 141,990.80, 212,805.30 and 75,462.80

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Solution

The fourth proportional to 141,990.80, 212,805.30 and 75,462.80 is: 113,098.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,990.80 : 212,805.30 = 75,462.80 : x
  2. Step 2: Convert to fraction form
    141,990.80/212,805.30 = 75,462.80/x
  3. Step 3: Cross multiply
    141,990.80x = 212,805.30 × 75,462.80
  4. Step 4: Simplify right side
    141,990.80x = 16,058,883,792.84
  5. Step 5: Solve for x
    x = 16,058,883,792.84/141,990.80
  6. Step 6: Final answer
    x = 113,098.06

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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.