Home / 259,084.90-388,740.21-90,726.16

Finding the Fourth Proportional to 259,084.90, 388,740.21 and 90,726.16

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Solution

The fourth proportional to 259,084.90, 388,740.21 and 90,726.16 is: 136,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,084.90 : 388,740.21 = 90,726.16 : x
  2. Step 2: Convert to fraction form
    259,084.90/388,740.21 = 90,726.16/x
  3. Step 3: Cross multiply
    259,084.90x = 388,740.21 × 90,726.16
  4. Step 4: Simplify right side
    259,084.90x = 35,268,906,490.89
  5. Step 5: Solve for x
    x = 35,268,906,490.89/259,084.90
  6. Step 6: Final answer
    x = 136,128.76

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1.5x scale

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.