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Finding the Fourth Proportional to 117,244.67, 161,853.44 and 78,549.12

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Solution

The fourth proportional to 117,244.67, 161,853.44 and 78,549.12 is: 108,435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,244.67 : 161,853.44 = 78,549.12 : x
  2. Step 2: Convert to fraction form
    117,244.67/161,853.44 = 78,549.12/x
  3. Step 3: Cross multiply
    117,244.67x = 161,853.44 × 78,549.12
  4. Step 4: Simplify right side
    117,244.67x = 12,713,444,888.23
  5. Step 5: Solve for x
    x = 12,713,444,888.23/117,244.67
  6. Step 6: Final answer
    x = 108,435.17

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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.