Home / 185,190.78-255,563.28-100,307.84

Finding the Fourth Proportional to 185,190.78, 255,563.28 and 100,307.84

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Solution

The fourth proportional to 185,190.78, 255,563.28 and 100,307.84 is: 138,424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,190.78 : 255,563.28 = 100,307.84 : x
  2. Step 2: Convert to fraction form
    185,190.78/255,563.28 = 100,307.84/x
  3. Step 3: Cross multiply
    185,190.78x = 255,563.28 × 100,307.84
  4. Step 4: Simplify right side
    185,190.78x = 25,635,000,600.12
  5. Step 5: Solve for x
    x = 25,635,000,600.12/185,190.78
  6. Step 6: Final answer
    x = 138,424.82

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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.