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Finding the Fourth Proportional to 159,235.44, 219,750.20 and 87,620.72

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Solution

The fourth proportional to 159,235.44, 219,750.20 and 87,620.72 is: 120,919.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,235.44 : 219,750.20 = 87,620.72 : x
  2. Step 2: Convert to fraction form
    159,235.44/219,750.20 = 87,620.72/x
  3. Step 3: Cross multiply
    159,235.44x = 219,750.20 × 87,620.72
  4. Step 4: Simplify right side
    159,235.44x = 19,254,670,744.14
  5. Step 5: Solve for x
    x = 19,254,670,744.14/159,235.44
  6. Step 6: Final answer
    x = 120,919.51

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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.