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Finding the Fourth Proportional to 117,221.66, 161,765.66 and 63,508.13

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Solution

The fourth proportional to 117,221.66, 161,765.66 and 63,508.13 is: 87,641.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,221.66 : 161,765.66 = 63,508.13 : x
  2. Step 2: Convert to fraction form
    117,221.66/161,765.66 = 63,508.13/x
  3. Step 3: Cross multiply
    117,221.66x = 161,765.66 × 63,508.13
  4. Step 4: Simplify right side
    117,221.66x = 10,273,433,914.76
  5. Step 5: Solve for x
    x = 10,273,433,914.76/117,221.66
  6. Step 6: Final answer
    x = 87,641.09

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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.