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Finding the Fourth Proportional to 157,371.60, 236,640.60 and 131,710.80

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Solution

The fourth proportional to 157,371.60, 236,640.60 and 131,710.80 is: 198,054.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,371.60 : 236,640.60 = 131,710.80 : x
  2. Step 2: Convert to fraction form
    157,371.60/236,640.60 = 131,710.80/x
  3. Step 3: Cross multiply
    157,371.60x = 236,640.60 × 131,710.80
  4. Step 4: Simplify right side
    157,371.60x = 31,168,122,738.48
  5. Step 5: Solve for x
    x = 31,168,122,738.48/157,371.60
  6. Step 6: Final answer
    x = 198,054.30

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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.