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Finding the Fourth Proportional to 123,768, 170,802.90 and 67,179.24

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Solution

The fourth proportional to 123,768, 170,802.90 and 67,179.24 is: 92,709.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,768 : 170,802.90 = 67,179.24 : x
  2. Step 2: Convert to fraction form
    123,768/170,802.90 = 67,179.24/x
  3. Step 3: Cross multiply
    123,768x = 170,802.90 × 67,179.24
  4. Step 4: Simplify right side
    123,768x = 11,474,409,011.80
  5. Step 5: Solve for x
    x = 11,474,409,011.80/123,768
  6. Step 6: Final answer
    x = 92,709.01

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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.