Home / 259,129.20-388,606.96-99,167.97

Finding the Fourth Proportional to 259,129.20, 388,606.96 and 99,167.97

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Solution

The fourth proportional to 259,129.20, 388,606.96 and 99,167.97 is: 148,718.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,129.20 : 388,606.96 = 99,167.97 : x
  2. Step 2: Convert to fraction form
    259,129.20/388,606.96 = 99,167.97/x
  3. Step 3: Cross multiply
    259,129.20x = 388,606.96 × 99,167.97
  4. Step 4: Simplify right side
    259,129.20x = 38,537,363,351.07
  5. Step 5: Solve for x
    x = 38,537,363,351.07/259,129.20
  6. Step 6: Final answer
    x = 148,718.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.