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Finding the Fourth Proportional to 160,486.74, 221,579.28 and 100,081.80

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Solution

The fourth proportional to 160,486.74, 221,579.28 and 100,081.80 is: 138,179.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,486.74 : 221,579.28 = 100,081.80 : x
  2. Step 2: Convert to fraction form
    160,486.74/221,579.28 = 100,081.80/x
  3. Step 3: Cross multiply
    160,486.74x = 221,579.28 × 100,081.80
  4. Step 4: Simplify right side
    160,486.74x = 22,176,053,185.10
  5. Step 5: Solve for x
    x = 22,176,053,185.10/160,486.74
  6. Step 6: Final answer
    x = 138,179.97

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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.