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Finding the Fourth Proportional to 124,768, 172,179.84 and 68,179.24

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Solution

The fourth proportional to 124,768, 172,179.84 and 68,179.24 is: 94,087.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,768 : 172,179.84 = 68,179.24 : x
  2. Step 2: Convert to fraction form
    124,768/172,179.84 = 68,179.24/x
  3. Step 3: Cross multiply
    124,768x = 172,179.84 × 68,179.24
  4. Step 4: Simplify right side
    124,768x = 11,739,090,634.52
  5. Step 5: Solve for x
    x = 11,739,090,634.52/124,768
  6. Step 6: Final answer
    x = 94,087.35

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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.