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Finding the Fourth Proportional to 124,908.84, 172,375.56 and 68,319

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Solution

The fourth proportional to 124,908.84, 172,375.56 and 68,319 is: 94,280.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,908.84 : 172,375.56 = 68,319 : x
  2. Step 2: Convert to fraction form
    124,908.84/172,375.56 = 68,319/x
  3. Step 3: Cross multiply
    124,908.84x = 172,375.56 × 68,319
  4. Step 4: Simplify right side
    124,908.84x = 11,776,525,883.64
  5. Step 5: Solve for x
    x = 11,776,525,883.64/124,908.84
  6. Step 6: Final answer
    x = 94,280.96

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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.