Home / 109,218.70-163,828.05-72,282.70

Finding the Fourth Proportional to 109,218.70, 163,828.05 and 72,282.70

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Solution

The fourth proportional to 109,218.70, 163,828.05 and 72,282.70 is: 108,424.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,218.70 : 163,828.05 = 72,282.70 : x
  2. Step 2: Convert to fraction form
    109,218.70/163,828.05 = 72,282.70/x
  3. Step 3: Cross multiply
    109,218.70x = 163,828.05 × 72,282.70
  4. Step 4: Simplify right side
    109,218.70x = 11,841,933,789.74
  5. Step 5: Solve for x
    x = 11,841,933,789.74/109,218.70
  6. Step 6: Final answer
    x = 108,424.05

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.