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Finding the Fourth Proportional to 143,612.00, 198,055.53 and 89,901.90

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Solution

The fourth proportional to 143,612.00, 198,055.53 and 89,901.90 is: 123,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,612.00 : 198,055.53 = 89,901.90 : x
  2. Step 2: Convert to fraction form
    143,612.00/198,055.53 = 89,901.90/x
  3. Step 3: Cross multiply
    143,612.00x = 198,055.53 × 89,901.90
  4. Step 4: Simplify right side
    143,612.00x = 17,805,568,452.51
  5. Step 5: Solve for x
    x = 17,805,568,452.51/143,612.00
  6. Step 6: Final answer
    x = 123,983.85

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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.