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Finding the Fourth Proportional to 159,410.60, 219,986.66 and 87,790.44

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Solution

The fourth proportional to 159,410.60, 219,986.66 and 87,790.44 is: 121,150.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,410.60 : 219,986.66 = 87,790.44 : x
  2. Step 2: Convert to fraction form
    159,410.60/219,986.66 = 87,790.44/x
  3. Step 3: Cross multiply
    159,410.60x = 219,986.66 × 87,790.44
  4. Step 4: Simplify right side
    159,410.60x = 19,312,725,675.53
  5. Step 5: Solve for x
    x = 19,312,725,675.53/159,410.60
  6. Step 6: Final answer
    x = 121,150.82

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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.