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Finding the Fourth Proportional to 146,687.80, 219,837.30 and 129,969.40

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Solution

The fourth proportional to 146,687.80, 219,837.30 and 129,969.40 is: 194,781.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,687.80 : 219,837.30 = 129,969.40 : x
  2. Step 2: Convert to fraction form
    146,687.80/219,837.30 = 129,969.40/x
  3. Step 3: Cross multiply
    146,687.80x = 219,837.30 × 129,969.40
  4. Step 4: Simplify right side
    146,687.80x = 28,572,121,978.62
  5. Step 5: Solve for x
    x = 28,572,121,978.62/146,687.80
  6. Step 6: Final answer
    x = 194,781.86

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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.