Home / 159,056.10-219,491.87-87,435.61

Finding the Fourth Proportional to 159,056.10, 219,491.87 and 87,435.61

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Solution

The fourth proportional to 159,056.10, 219,491.87 and 87,435.61 is: 120,658.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,056.10 : 219,491.87 = 87,435.61 : x
  2. Step 2: Convert to fraction form
    159,056.10/219,491.87 = 87,435.61/x
  3. Step 3: Cross multiply
    159,056.10x = 219,491.87 × 87,435.61
  4. Step 4: Simplify right side
    159,056.10x = 19,191,404,557.58
  5. Step 5: Solve for x
    x = 19,191,404,557.58/159,056.10
  6. Step 6: Final answer
    x = 120,658.09

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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.