Home / 185,008.73-255,312.81-100,125.78

Finding the Fourth Proportional to 185,008.73, 255,312.81 and 100,125.78

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Solution

The fourth proportional to 185,008.73, 255,312.81 and 100,125.78 is: 138,173.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,008.73 : 255,312.81 = 100,125.78 : x
  2. Step 2: Convert to fraction form
    185,008.73/255,312.81 = 100,125.78/x
  3. Step 3: Cross multiply
    185,008.73x = 255,312.81 × 100,125.78
  4. Step 4: Simplify right side
    185,008.73x = 25,563,394,245.24
  5. Step 5: Solve for x
    x = 25,563,394,245.24/185,008.73
  6. Step 6: Final answer
    x = 138,173.99

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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.