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Finding the Fourth Proportional to 159,293.08, 219,822.76 and 87,671.57

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Solution

The fourth proportional to 159,293.08, 219,822.76 and 87,671.57 is: 120,985.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,293.08 : 219,822.76 = 87,671.57 : x
  2. Step 2: Convert to fraction form
    159,293.08/219,822.76 = 87,671.57/x
  3. Step 3: Cross multiply
    159,293.08x = 219,822.76 × 87,671.57
  4. Step 4: Simplify right side
    159,293.08x = 19,272,205,501.41
  5. Step 5: Solve for x
    x = 19,272,205,501.41/159,293.08
  6. Step 6: Final answer
    x = 120,985.83

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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.