Home / 155,456.33-231,972.05-138,701.18

Finding the Fourth Proportional to 155,456.33, 231,972.05 and 138,701.18

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Solution

The fourth proportional to 155,456.33, 231,972.05 and 138,701.18 is: 206,970.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,456.33 : 231,972.05 = 138,701.18 : x
  2. Step 2: Convert to fraction form
    155,456.33/231,972.05 = 138,701.18/x
  3. Step 3: Cross multiply
    155,456.33x = 231,972.05 × 138,701.18
  4. Step 4: Simplify right side
    155,456.33x = 32,174,795,208.65
  5. Step 5: Solve for x
    x = 32,174,795,208.65/155,456.33
  6. Step 6: Final answer
    x = 206,970.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.