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Finding the Fourth Proportional to 159,099.57, 219,558.21 and 87,484.20

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Solution

The fourth proportional to 159,099.57, 219,558.21 and 87,484.20 is: 120,728.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,099.57 : 219,558.21 = 87,484.20 : x
  2. Step 2: Convert to fraction form
    159,099.57/219,558.21 = 87,484.20/x
  3. Step 3: Cross multiply
    159,099.57x = 219,558.21 × 87,484.20
  4. Step 4: Simplify right side
    159,099.57x = 19,207,874,355.28
  5. Step 5: Solve for x
    x = 19,207,874,355.28/159,099.57
  6. Step 6: Final answer
    x = 120,728.64

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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.