Home / 185,130.72-255,480.60-100,247.88

Finding the Fourth Proportional to 185,130.72, 255,480.60 and 100,247.88

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Solution

The fourth proportional to 185,130.72, 255,480.60 and 100,247.88 is: 138,342.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,130.72 : 255,480.60 = 100,247.88 : x
  2. Step 2: Convert to fraction form
    185,130.72/255,480.60 = 100,247.88/x
  3. Step 3: Cross multiply
    185,130.72x = 255,480.60 × 100,247.88
  4. Step 4: Simplify right side
    185,130.72x = 25,611,388,531.13
  5. Step 5: Solve for x
    x = 25,611,388,531.13/185,130.72
  6. Step 6: Final answer
    x = 138,342.19

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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.