Home / 143,774.97-198,409.47-83,380.65

Finding the Fourth Proportional to 143,774.97, 198,409.47 and 83,380.65

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Solution

The fourth proportional to 143,774.97, 198,409.47 and 83,380.65 is: 115,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,774.97 : 198,409.47 = 83,380.65 : x
  2. Step 2: Convert to fraction form
    143,774.97/198,409.47 = 83,380.65/x
  3. Step 3: Cross multiply
    143,774.97x = 198,409.47 × 83,380.65
  4. Step 4: Simplify right side
    143,774.97x = 16,543,510,574.76
  5. Step 5: Solve for x
    x = 16,543,510,574.76/143,774.97
  6. Step 6: Final answer
    x = 115,065.30

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1.5x scale

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.