Home / 185,384-255,828.40-100,498.88

Finding the Fourth Proportional to 185,384, 255,828.40 and 100,498.88

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Solution

The fourth proportional to 185,384, 255,828.40 and 100,498.88 is: 138,687.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,384 : 255,828.40 = 100,498.88 : x
  2. Step 2: Convert to fraction form
    185,384/255,828.40 = 100,498.88/x
  3. Step 3: Cross multiply
    185,384x = 255,828.40 × 100,498.88
  4. Step 4: Simplify right side
    185,384x = 25,710,467,672.19
  5. Step 5: Solve for x
    x = 25,710,467,672.19/185,384
  6. Step 6: Final answer
    x = 138,687.63

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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.