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Finding the Fourth Proportional to 143,753.88, 198,374.58 and 80,090.04

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Solution

The fourth proportional to 143,753.88, 198,374.58 and 80,090.04 is: 110,521.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,753.88 : 198,374.58 = 80,090.04 : x
  2. Step 2: Convert to fraction form
    143,753.88/198,374.58 = 80,090.04/x
  3. Step 3: Cross multiply
    143,753.88x = 198,374.58 × 80,090.04
  4. Step 4: Simplify right side
    143,753.88x = 15,887,828,047.18
  5. Step 5: Solve for x
    x = 15,887,828,047.18/143,753.88
  6. Step 6: Final answer
    x = 110,521.04

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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.