Home / 143,618.75-198,064.85-89,908.65

Finding the Fourth Proportional to 143,618.75, 198,064.85 and 89,908.65

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Solution

The fourth proportional to 143,618.75, 198,064.85 and 89,908.65 is: 123,993.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,618.75 : 198,064.85 = 89,908.65 : x
  2. Step 2: Convert to fraction form
    143,618.75/198,064.85 = 89,908.65/x
  3. Step 3: Cross multiply
    143,618.75x = 198,064.85 × 89,908.65
  4. Step 4: Simplify right side
    143,618.75x = 17,807,742,826.41
  5. Step 5: Solve for x
    x = 17,807,742,826.41/143,618.75
  6. Step 6: Final answer
    x = 123,993.17

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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.