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Finding the Fourth Proportional to 143,488, 197,959.96 and 89,752.60

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Solution

The fourth proportional to 143,488, 197,959.96 and 89,752.60 is: 123,825.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,488 : 197,959.96 = 89,752.60 : x
  2. Step 2: Convert to fraction form
    143,488/197,959.96 = 89,752.60/x
  3. Step 3: Cross multiply
    143,488x = 197,959.96 × 89,752.60
  4. Step 4: Simplify right side
    143,488x = 17,767,421,105.90
  5. Step 5: Solve for x
    x = 17,767,421,105.90/143,488
  6. Step 6: Final answer
    x = 123,825.14

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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.