Home / 259,076.40-388,727.46-90,717.66

Finding the Fourth Proportional to 259,076.40, 388,727.46 and 90,717.66

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Solution

The fourth proportional to 259,076.40, 388,727.46 and 90,717.66 is: 136,116.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,076.40 : 388,727.46 = 90,717.66 : x
  2. Step 2: Convert to fraction form
    259,076.40/388,727.46 = 90,717.66/x
  3. Step 3: Cross multiply
    259,076.40x = 388,727.46 × 90,717.66
  4. Step 4: Simplify right side
    259,076.40x = 35,264,445,548.94
  5. Step 5: Solve for x
    x = 35,264,445,548.94/259,076.40
  6. Step 6: Final answer
    x = 136,116.01

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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.