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Finding the Fourth Proportional to 159,189.45, 219,697.50 and 91,215.41

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Solution

The fourth proportional to 159,189.45, 219,697.50 and 91,215.41 is: 125,886.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,189.45 : 219,697.50 = 91,215.41 : x
  2. Step 2: Convert to fraction form
    159,189.45/219,697.50 = 91,215.41/x
  3. Step 3: Cross multiply
    159,189.45x = 219,697.50 × 91,215.41
  4. Step 4: Simplify right side
    159,189.45x = 20,039,796,439.99
  5. Step 5: Solve for x
    x = 20,039,796,439.99/159,189.45
  6. Step 6: Final answer
    x = 125,886.46

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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.