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Finding the Fourth Proportional to 159,025.28, 219,460.59 and 87,411.96

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Solution

The fourth proportional to 159,025.28, 219,460.59 and 87,411.96 is: 120,631.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,025.28 : 219,460.59 = 87,411.96 : x
  2. Step 2: Convert to fraction form
    159,025.28/219,460.59 = 87,411.96/x
  3. Step 3: Cross multiply
    159,025.28x = 219,460.59 × 87,411.96
  4. Step 4: Simplify right side
    159,025.28x = 19,183,480,314.66
  5. Step 5: Solve for x
    x = 19,183,480,314.66/159,025.28
  6. Step 6: Final answer
    x = 120,631.64

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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.