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Finding the Fourth Proportional to 159,115.43, 219,584.93 and 87,500.90

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Solution

The fourth proportional to 159,115.43, 219,584.93 and 87,500.90 is: 120,754.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,115.43 : 219,584.93 = 87,500.90 : x
  2. Step 2: Convert to fraction form
    159,115.43/219,584.93 = 87,500.90/x
  3. Step 3: Cross multiply
    159,115.43x = 219,584.93 × 87,500.90
  4. Step 4: Simplify right side
    159,115.43x = 19,213,877,466.01
  5. Step 5: Solve for x
    x = 19,213,877,466.01/159,115.43
  6. Step 6: Final answer
    x = 120,754.34

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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.