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Finding the Fourth Proportional to 158,856.88, 219,213.96 and 87,246.64

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Solution

The fourth proportional to 158,856.88, 219,213.96 and 87,246.64 is: 120,395.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,856.88 : 219,213.96 = 87,246.64 : x
  2. Step 2: Convert to fraction form
    158,856.88/219,213.96 = 87,246.64/x
  3. Step 3: Cross multiply
    158,856.88x = 219,213.96 × 87,246.64
  4. Step 4: Simplify right side
    158,856.88x = 19,125,681,451.09
  5. Step 5: Solve for x
    x = 19,125,681,451.09/158,856.88
  6. Step 6: Final answer
    x = 120,395.68

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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.