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Finding the Fourth Proportional to 115,107.73, 158,873.17 and 77,360.11

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Solution

The fourth proportional to 115,107.73, 158,873.17 and 77,360.11 is: 106,773.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,107.73 : 158,873.17 = 77,360.11 : x
  2. Step 2: Convert to fraction form
    115,107.73/158,873.17 = 77,360.11/x
  3. Step 3: Cross multiply
    115,107.73x = 158,873.17 × 77,360.11
  4. Step 4: Simplify right side
    115,107.73x = 12,290,445,907.25
  5. Step 5: Solve for x
    x = 12,290,445,907.25/115,107.73
  6. Step 6: Final answer
    x = 106,773.42

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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.