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Finding the Fourth Proportional to 117,102.60, 161,601.98 and 63,387.60

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Solution

The fourth proportional to 117,102.60, 161,601.98 and 63,387.60 is: 87,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,102.60 : 161,601.98 = 63,387.60 : x
  2. Step 2: Convert to fraction form
    117,102.60/161,601.98 = 63,387.60/x
  3. Step 3: Cross multiply
    117,102.60x = 161,601.98 × 63,387.60
  4. Step 4: Simplify right side
    117,102.60x = 10,243,561,667.45
  5. Step 5: Solve for x
    x = 10,243,561,667.45/117,102.60
  6. Step 6: Final answer
    x = 87,475.10

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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.