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Finding the Fourth Proportional to 125,227.84, 172,812.54 and 68,639.32

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Solution

The fourth proportional to 125,227.84, 172,812.54 and 68,639.32 is: 94,721.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,227.84 : 172,812.54 = 68,639.32 : x
  2. Step 2: Convert to fraction form
    125,227.84/172,812.54 = 68,639.32/x
  3. Step 3: Cross multiply
    125,227.84x = 172,812.54 × 68,639.32
  4. Step 4: Simplify right side
    125,227.84x = 11,861,735,233.07
  5. Step 5: Solve for x
    x = 11,861,735,233.07/125,227.84
  6. Step 6: Final answer
    x = 94,721.23

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1.5x scale

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.