Home / 185,519.61-256,017.71-100,637.28

Finding the Fourth Proportional to 185,519.61, 256,017.71 and 100,637.28

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Solution

The fourth proportional to 185,519.61, 256,017.71 and 100,637.28 is: 138,879.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,519.61 : 256,017.71 = 100,637.28 : x
  2. Step 2: Convert to fraction form
    185,519.61/256,017.71 = 100,637.28/x
  3. Step 3: Cross multiply
    185,519.61x = 256,017.71 × 100,637.28
  4. Step 4: Simplify right side
    185,519.61x = 25,764,926,217.82
  5. Step 5: Solve for x
    x = 25,764,926,217.82/185,519.61
  6. Step 6: Final answer
    x = 138,879.80

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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.