Home / 117,427.29-162,164.70-81,221.46

Finding the Fourth Proportional to 117,427.29, 162,164.70 and 81,221.46

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Solution

The fourth proportional to 117,427.29, 162,164.70 and 81,221.46 is: 112,165.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,427.29 : 162,164.70 = 81,221.46 : x
  2. Step 2: Convert to fraction form
    117,427.29/162,164.70 = 81,221.46/x
  3. Step 3: Cross multiply
    117,427.29x = 162,164.70 × 81,221.46
  4. Step 4: Simplify right side
    117,427.29x = 13,171,253,694.46
  5. Step 5: Solve for x
    x = 13,171,253,694.46/117,427.29
  6. Step 6: Final answer
    x = 112,165.18

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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.