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Finding the Fourth Proportional to 143,662.86, 198,159.75 and 89,854.46

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Solution

The fourth proportional to 143,662.86, 198,159.75 and 89,854.46 is: 123,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,662.86 : 198,159.75 = 89,854.46 : x
  2. Step 2: Convert to fraction form
    143,662.86/198,159.75 = 89,854.46/x
  3. Step 3: Cross multiply
    143,662.86x = 198,159.75 × 89,854.46
  4. Step 4: Simplify right side
    143,662.86x = 17,805,537,329.99
  5. Step 5: Solve for x
    x = 17,805,537,329.99/143,662.86
  6. Step 6: Final answer
    x = 123,939.74

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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.