Home / 155,463.31-231,982.50-138,708.19

Finding the Fourth Proportional to 155,463.31, 231,982.50 and 138,708.19

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Solution

The fourth proportional to 155,463.31, 231,982.50 and 138,708.19 is: 206,980.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,463.31 : 231,982.50 = 138,708.19 : x
  2. Step 2: Convert to fraction form
    155,463.31/231,982.50 = 138,708.19/x
  3. Step 3: Cross multiply
    155,463.31x = 231,982.50 × 138,708.19
  4. Step 4: Simplify right side
    155,463.31x = 32,177,872,686.68
  5. Step 5: Solve for x
    x = 32,177,872,686.68/155,463.31
  6. Step 6: Final answer
    x = 206,980.49

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1.5x scale

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.