Home / 185,161.40-255,522.49-100,278.80

Finding the Fourth Proportional to 185,161.40, 255,522.49 and 100,278.80

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Solution

The fourth proportional to 185,161.40, 255,522.49 and 100,278.80 is: 138,384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,161.40 : 255,522.49 = 100,278.80 : x
  2. Step 2: Convert to fraction form
    185,161.40/255,522.49 = 100,278.80/x
  3. Step 3: Cross multiply
    185,161.40x = 255,522.49 × 100,278.80
  4. Step 4: Simplify right side
    185,161.40x = 25,623,487,141.90
  5. Step 5: Solve for x
    x = 25,623,487,141.90/185,161.40
  6. Step 6: Final answer
    x = 138,384.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.