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Finding the Fourth Proportional to 158,813.64, 219,163.25 and 87,198.30

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Solution

The fourth proportional to 158,813.64, 219,163.25 and 87,198.30 is: 120,333.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,813.64 : 219,163.25 = 87,198.30 : x
  2. Step 2: Convert to fraction form
    158,813.64/219,163.25 = 87,198.30/x
  3. Step 3: Cross multiply
    158,813.64x = 219,163.25 × 87,198.30
  4. Step 4: Simplify right side
    158,813.64x = 19,110,663,040.47
  5. Step 5: Solve for x
    x = 19,110,663,040.47/158,813.64
  6. Step 6: Final answer
    x = 120,333.89

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1.5x scale

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.