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Finding the Fourth Proportional to 158,622, 218,898.36 and 87,966

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Solution

The fourth proportional to 158,622, 218,898.36 and 87,966 is: 121,393.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,622 : 218,898.36 = 87,966 : x
  2. Step 2: Convert to fraction form
    158,622/218,898.36 = 87,966/x
  3. Step 3: Cross multiply
    158,622x = 218,898.36 × 87,966
  4. Step 4: Simplify right side
    158,622x = 19,255,613,135.76
  5. Step 5: Solve for x
    x = 19,255,613,135.76/158,622
  6. Step 6: Final answer
    x = 121,393.08

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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.