Home / 259,128.20-388,605.47-99,166.97

Finding the Fourth Proportional to 259,128.20, 388,605.47 and 99,166.97

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Solution

The fourth proportional to 259,128.20, 388,605.47 and 99,166.97 is: 148,717.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,128.20 : 388,605.47 = 99,166.97 : x
  2. Step 2: Convert to fraction form
    259,128.20/388,605.47 = 99,166.97/x
  3. Step 3: Cross multiply
    259,128.20x = 388,605.47 × 99,166.97
  4. Step 4: Simplify right side
    259,128.20x = 38,536,824,546.46
  5. Step 5: Solve for x
    x = 38,536,824,546.46/259,128.20
  6. Step 6: Final answer
    x = 148,717.22

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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.