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Finding the Fourth Proportional to 159,121.98, 219,594.03 and 87,507.54

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Solution

The fourth proportional to 159,121.98, 219,594.03 and 87,507.54 is: 120,763.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,121.98 : 219,594.03 = 87,507.54 : x
  2. Step 2: Convert to fraction form
    159,121.98/219,594.03 = 87,507.54/x
  3. Step 3: Cross multiply
    159,121.98x = 219,594.03 × 87,507.54
  4. Step 4: Simplify right side
    159,121.98x = 19,216,133,363.99
  5. Step 5: Solve for x
    x = 19,216,133,363.99/159,121.98
  6. Step 6: Final answer
    x = 120,763.54

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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.