Home / 143,780.93-198,418.47-83,387.38

Finding the Fourth Proportional to 143,780.93, 198,418.47 and 83,387.38

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Solution

The fourth proportional to 143,780.93, 198,418.47 and 83,387.38 is: 115,075.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,780.93 : 198,418.47 = 83,387.38 : x
  2. Step 2: Convert to fraction form
    143,780.93/198,418.47 = 83,387.38/x
  3. Step 3: Cross multiply
    143,780.93x = 198,418.47 × 83,387.38
  4. Step 4: Simplify right side
    143,780.93x = 16,545,595,548.16
  5. Step 5: Solve for x
    x = 16,545,595,548.16/143,780.93
  6. Step 6: Final answer
    x = 115,075.04

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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.