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Finding the Fourth Proportional to 141,816.80, 212,710.80 and 48,321.20

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Solution

The fourth proportional to 141,816.80, 212,710.80 and 48,321.20 is: 72,476.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,816.80 : 212,710.80 = 48,321.20 : x
  2. Step 2: Convert to fraction form
    141,816.80/212,710.80 = 48,321.20/x
  3. Step 3: Cross multiply
    141,816.80x = 212,710.80 × 48,321.20
  4. Step 4: Simplify right side
    141,816.80x = 10,278,441,108.96
  5. Step 5: Solve for x
    x = 10,278,441,108.96/141,816.80
  6. Step 6: Final answer
    x = 72,476.89

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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.