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Finding the Fourth Proportional to 156,671.54, 216,183.92 and 89,590.58

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Solution

The fourth proportional to 156,671.54, 216,183.92 and 89,590.58 is: 123,621.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,671.54 : 216,183.92 = 89,590.58 : x
  2. Step 2: Convert to fraction form
    156,671.54/216,183.92 = 89,590.58/x
  3. Step 3: Cross multiply
    156,671.54x = 216,183.92 × 89,590.58
  4. Step 4: Simplify right side
    156,671.54x = 19,368,042,779.47
  5. Step 5: Solve for x
    x = 19,368,042,779.47/156,671.54
  6. Step 6: Final answer
    x = 123,621.96

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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.