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Finding the Fourth Proportional to 143,610.98, 198,054.15 and 89,900.90

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Solution

The fourth proportional to 143,610.98, 198,054.15 and 89,900.90 is: 123,982.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,610.98 : 198,054.15 = 89,900.90 : x
  2. Step 2: Convert to fraction form
    143,610.98/198,054.15 = 89,900.90/x
  3. Step 3: Cross multiply
    143,610.98x = 198,054.15 × 89,900.90
  4. Step 4: Simplify right side
    143,610.98x = 17,805,246,333.74
  5. Step 5: Solve for x
    x = 17,805,246,333.74/143,610.98
  6. Step 6: Final answer
    x = 123,982.49

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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.