Home / 142,987.80-197,241.18-89,179.40

Finding the Fourth Proportional to 142,987.80, 197,241.18 and 89,179.40

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Solution

The fourth proportional to 142,987.80, 197,241.18 and 89,179.40 is: 123,016.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,987.80 : 197,241.18 = 89,179.40 : x
  2. Step 2: Convert to fraction form
    142,987.80/197,241.18 = 89,179.40/x
  3. Step 3: Cross multiply
    142,987.80x = 197,241.18 × 89,179.40
  4. Step 4: Simplify right side
    142,987.80x = 17,589,850,008.35
  5. Step 5: Solve for x
    x = 17,589,850,008.35/142,987.80
  6. Step 6: Final answer
    x = 123,016.44

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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.