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Finding the Fourth Proportional to 158,244, 218,376.72 and 87,588

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Solution

The fourth proportional to 158,244, 218,376.72 and 87,588 is: 120,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,244 : 218,376.72 = 87,588 : x
  2. Step 2: Convert to fraction form
    158,244/218,376.72 = 87,588/x
  3. Step 3: Cross multiply
    158,244x = 218,376.72 × 87,588
  4. Step 4: Simplify right side
    158,244x = 19,127,180,151.36
  5. Step 5: Solve for x
    x = 19,127,180,151.36/158,244
  6. Step 6: Final answer
    x = 120,871.44

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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.