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Finding the Fourth Proportional to 158,569.78, 218,832.90 and 86,952.52

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Solution

The fourth proportional to 158,569.78, 218,832.90 and 86,952.52 is: 119,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,569.78 : 218,832.90 = 86,952.52 : x
  2. Step 2: Convert to fraction form
    158,569.78/218,832.90 = 86,952.52/x
  3. Step 3: Cross multiply
    158,569.78x = 218,832.90 × 86,952.52
  4. Step 4: Simplify right side
    158,569.78x = 19,028,072,113.91
  5. Step 5: Solve for x
    x = 19,028,072,113.91/158,569.78
  6. Step 6: Final answer
    x = 119,998.10

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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.