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Finding the Fourth Proportional to 141,877.76, 212,851.20 and 43,381.76

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Solution

The fourth proportional to 141,877.76, 212,851.20 and 43,381.76 is: 65,083.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,877.76 : 212,851.20 = 43,381.76 : x
  2. Step 2: Convert to fraction form
    141,877.76/212,851.20 = 43,381.76/x
  3. Step 3: Cross multiply
    141,877.76x = 212,851.20 × 43,381.76
  4. Step 4: Simplify right side
    141,877.76x = 9,233,859,674.11
  5. Step 5: Solve for x
    x = 9,233,859,674.11/141,877.76
  6. Step 6: Final answer
    x = 65,083.21

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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.