Home / 143,921.29-198,692.55-99,798.57

Finding the Fourth Proportional to 143,921.29, 198,692.55 and 99,798.57

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Solution

The fourth proportional to 143,921.29, 198,692.55 and 99,798.57 is: 137,778.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,921.29 : 198,692.55 = 99,798.57 : x
  2. Step 2: Convert to fraction form
    143,921.29/198,692.55 = 99,798.57/x
  3. Step 3: Cross multiply
    143,921.29x = 198,692.55 × 99,798.57
  4. Step 4: Simplify right side
    143,921.29x = 19,829,232,359.65
  5. Step 5: Solve for x
    x = 19,829,232,359.65/143,921.29
  6. Step 6: Final answer
    x = 137,778.31

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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.