Home / 185,605.74-256,134.41-100,722.80

Finding the Fourth Proportional to 185,605.74, 256,134.41 and 100,722.80

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Solution

The fourth proportional to 185,605.74, 256,134.41 and 100,722.80 is: 138,996.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,605.74 : 256,134.41 = 100,722.80 : x
  2. Step 2: Convert to fraction form
    185,605.74/256,134.41 = 100,722.80/x
  3. Step 3: Cross multiply
    185,605.74x = 256,134.41 × 100,722.80
  4. Step 4: Simplify right side
    185,605.74x = 25,798,574,951.55
  5. Step 5: Solve for x
    x = 25,798,574,951.55/185,605.74
  6. Step 6: Final answer
    x = 138,996.64

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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.