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Finding the Fourth Proportional to 117,335.55, 161,922.72 and 63,620.40

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Solution

The fourth proportional to 117,335.55, 161,922.72 and 63,620.40 is: 87,795.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,335.55 : 161,922.72 = 63,620.40 : x
  2. Step 2: Convert to fraction form
    117,335.55/161,922.72 = 63,620.40/x
  3. Step 3: Cross multiply
    117,335.55x = 161,922.72 × 63,620.40
  4. Step 4: Simplify right side
    117,335.55x = 10,301,588,215.49
  5. Step 5: Solve for x
    x = 10,301,588,215.49/117,335.55
  6. Step 6: Final answer
    x = 87,795.97

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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.