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Finding the Fourth Proportional to 159,578.08, 220,216.56 and 87,958.24

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Solution

The fourth proportional to 159,578.08, 220,216.56 and 87,958.24 is: 121,381.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,578.08 : 220,216.56 = 87,958.24 : x
  2. Step 2: Convert to fraction form
    159,578.08/220,216.56 = 87,958.24/x
  3. Step 3: Cross multiply
    159,578.08x = 220,216.56 × 87,958.24
  4. Step 4: Simplify right side
    159,578.08x = 19,369,861,036.45
  5. Step 5: Solve for x
    x = 19,369,861,036.45/159,578.08
  6. Step 6: Final answer
    x = 121,381.72

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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.