Home / 157,890.90-217,865.66-89,910.44

Finding the Fourth Proportional to 157,890.90, 217,865.66 and 89,910.44

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Solution

The fourth proportional to 157,890.90, 217,865.66 and 89,910.44 is: 124,062.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,890.90 : 217,865.66 = 89,910.44 : x
  2. Step 2: Convert to fraction form
    157,890.90/217,865.66 = 89,910.44/x
  3. Step 3: Cross multiply
    157,890.90x = 217,865.66 × 89,910.44
  4. Step 4: Simplify right side
    157,890.90x = 19,588,395,812.61
  5. Step 5: Solve for x
    x = 19,588,395,812.61/157,890.90
  6. Step 6: Final answer
    x = 124,062.85

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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.