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Finding the Fourth Proportional to 104,586.80, 144,447.28 and 80,998.78

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Solution

The fourth proportional to 104,586.80, 144,447.28 and 80,998.78 is: 111,869.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,586.80 : 144,447.28 = 80,998.78 : x
  2. Step 2: Convert to fraction form
    104,586.80/144,447.28 = 80,998.78/x
  3. Step 3: Cross multiply
    104,586.80x = 144,447.28 × 80,998.78
  4. Step 4: Simplify right side
    104,586.80x = 11,700,053,454.32
  5. Step 5: Solve for x
    x = 11,700,053,454.32/104,586.80
  6. Step 6: Final answer
    x = 111,869.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.