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Finding the Fourth Proportional to 123,866.08, 170,935.68 and 67,278.40

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Solution

The fourth proportional to 123,866.08, 170,935.68 and 67,278.40 is: 92,844.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,866.08 : 170,935.68 = 67,278.40 : x
  2. Step 2: Convert to fraction form
    123,866.08/170,935.68 = 67,278.40/x
  3. Step 3: Cross multiply
    123,866.08x = 170,935.68 × 67,278.40
  4. Step 4: Simplify right side
    123,866.08x = 11,500,279,053.31
  5. Step 5: Solve for x
    x = 11,500,279,053.31/123,866.08
  6. Step 6: Final answer
    x = 92,844.46

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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.