Home / 143,565.09-198,116.87-89,879.64

Finding the Fourth Proportional to 143,565.09, 198,116.87 and 89,879.64

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Solution

The fourth proportional to 143,565.09, 198,116.87 and 89,879.64 is: 124,032.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,565.09 : 198,116.87 = 89,879.64 : x
  2. Step 2: Convert to fraction form
    143,565.09/198,116.87 = 89,879.64/x
  3. Step 3: Cross multiply
    143,565.09x = 198,116.87 × 89,879.64
  4. Step 4: Simplify right side
    143,565.09x = 17,806,672,504.13
  5. Step 5: Solve for x
    x = 17,806,672,504.13/143,565.09
  6. Step 6: Final answer
    x = 124,032.05

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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.