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Finding the Fourth Proportional to 159,035.46, 219,469.41 and 87,422.82

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Solution

The fourth proportional to 159,035.46, 219,469.41 and 87,422.82 is: 120,643.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,035.46 : 219,469.41 = 87,422.82 : x
  2. Step 2: Convert to fraction form
    159,035.46/219,469.41 = 87,422.82/x
  3. Step 3: Cross multiply
    159,035.46x = 219,469.41 × 87,422.82
  4. Step 4: Simplify right side
    159,035.46x = 19,186,634,725.94
  5. Step 5: Solve for x
    x = 19,186,634,725.94/159,035.46
  6. Step 6: Final answer
    x = 120,643.75

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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.