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Finding the Fourth Proportional to 154,875.97, 213,724.74 and 86,887.27

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Solution

The fourth proportional to 154,875.97, 213,724.74 and 86,887.27 is: 119,902.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,875.97 : 213,724.74 = 86,887.27 : x
  2. Step 2: Convert to fraction form
    154,875.97/213,724.74 = 86,887.27/x
  3. Step 3: Cross multiply
    154,875.97x = 213,724.74 × 86,887.27
  4. Step 4: Simplify right side
    154,875.97x = 18,569,959,190.06
  5. Step 5: Solve for x
    x = 18,569,959,190.06/154,875.97
  6. Step 6: Final answer
    x = 119,902.13

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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.