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Finding the Fourth Proportional to 117,345.80, 161,936.33 and 63,630.74

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Solution

The fourth proportional to 117,345.80, 161,936.33 and 63,630.74 is: 87,809.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,345.80 : 161,936.33 = 63,630.74 : x
  2. Step 2: Convert to fraction form
    117,345.80/161,936.33 = 63,630.74/x
  3. Step 3: Cross multiply
    117,345.80x = 161,936.33 × 63,630.74
  4. Step 4: Simplify right side
    117,345.80x = 10,304,128,597.47
  5. Step 5: Solve for x
    x = 10,304,128,597.47/117,345.80
  6. Step 6: Final answer
    x = 87,809.95

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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.