Home / 157,691.30-236,453.72-68,840.78

Finding the Fourth Proportional to 157,691.30, 236,453.72 and 68,840.78

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Solution

The fourth proportional to 157,691.30, 236,453.72 and 68,840.78 is: 103,224.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,691.30 : 236,453.72 = 68,840.78 : x
  2. Step 2: Convert to fraction form
    157,691.30/236,453.72 = 68,840.78/x
  3. Step 3: Cross multiply
    157,691.30x = 236,453.72 × 68,840.78
  4. Step 4: Simplify right side
    157,691.30x = 16,277,658,518.70
  5. Step 5: Solve for x
    x = 16,277,658,518.70/157,691.30
  6. Step 6: Final answer
    x = 103,224.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.