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Finding the Fourth Proportional to 117,178.39, 161,706.12 and 63,463.40

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Solution

The fourth proportional to 117,178.39, 161,706.12 and 63,463.40 is: 87,579.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,178.39 : 161,706.12 = 63,463.40 : x
  2. Step 2: Convert to fraction form
    117,178.39/161,706.12 = 63,463.40/x
  3. Step 3: Cross multiply
    117,178.39x = 161,706.12 × 63,463.40
  4. Step 4: Simplify right side
    117,178.39x = 10,262,420,176.01
  5. Step 5: Solve for x
    x = 10,262,420,176.01/117,178.39
  6. Step 6: Final answer
    x = 87,579.46

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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.