Home / 143,601.86-198,041.56-89,891.78

Finding the Fourth Proportional to 143,601.86, 198,041.56 and 89,891.78

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Solution

The fourth proportional to 143,601.86, 198,041.56 and 89,891.78 is: 123,969.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,601.86 : 198,041.56 = 89,891.78 : x
  2. Step 2: Convert to fraction form
    143,601.86/198,041.56 = 89,891.78/x
  3. Step 3: Cross multiply
    143,601.86x = 198,041.56 × 89,891.78
  4. Step 4: Simplify right side
    143,601.86x = 17,802,307,127.44
  5. Step 5: Solve for x
    x = 17,802,307,127.44/143,601.86
  6. Step 6: Final answer
    x = 123,969.89

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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.