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Finding the Fourth Proportional to 117,286.47, 161,854.42 and 63,570.10

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Solution

The fourth proportional to 117,286.47, 161,854.42 and 63,570.10 is: 87,726.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,286.47 : 161,854.42 = 63,570.10 : x
  2. Step 2: Convert to fraction form
    117,286.47/161,854.42 = 63,570.10/x
  3. Step 3: Cross multiply
    117,286.47x = 161,854.42 × 63,570.10
  4. Step 4: Simplify right side
    117,286.47x = 10,289,101,664.84
  5. Step 5: Solve for x
    x = 10,289,101,664.84/117,286.47
  6. Step 6: Final answer
    x = 87,726.25

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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.