Home / 84,105.76-126,146.44-27,172.08

Finding the Fourth Proportional to 84,105.76, 126,146.44 and 27,172.08

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Solution

The fourth proportional to 84,105.76, 126,146.44 and 27,172.08 is: 40,754.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,105.76 : 126,146.44 = 27,172.08 : x
  2. Step 2: Convert to fraction form
    84,105.76/126,146.44 = 27,172.08/x
  3. Step 3: Cross multiply
    84,105.76x = 126,146.44 × 27,172.08
  4. Step 4: Simplify right side
    84,105.76x = 3,427,661,159.40
  5. Step 5: Solve for x
    x = 3,427,661,159.40/84,105.76
  6. Step 6: Final answer
    x = 40,754.18

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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.