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Finding the Fourth Proportional to 140,490.80, 193,895.88 and 80,083.28

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Solution

The fourth proportional to 140,490.80, 193,895.88 and 80,083.28 is: 110,525.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,490.80 : 193,895.88 = 80,083.28 : x
  2. Step 2: Convert to fraction form
    140,490.80/193,895.88 = 80,083.28/x
  3. Step 3: Cross multiply
    140,490.80x = 193,895.88 × 80,083.28
  4. Step 4: Simplify right side
    140,490.80x = 15,527,818,048.89
  5. Step 5: Solve for x
    x = 15,527,818,048.89/140,490.80
  6. Step 6: Final answer
    x = 110,525.52

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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.