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Finding the Fourth Proportional to 105,179.65, 146,127.76 and 103,918.52

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Solution

The fourth proportional to 105,179.65, 146,127.76 and 103,918.52 is: 144,375.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,179.65 : 146,127.76 = 103,918.52 : x
  2. Step 2: Convert to fraction form
    105,179.65/146,127.76 = 103,918.52/x
  3. Step 3: Cross multiply
    105,179.65x = 146,127.76 × 103,918.52
  4. Step 4: Simplify right side
    105,179.65x = 15,185,380,261.93
  5. Step 5: Solve for x
    x = 15,185,380,261.93/105,179.65
  6. Step 6: Final answer
    x = 144,375.65

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.