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Finding the Fourth Proportional to 158,400.92, 218,593.20 and 94,738.72

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Solution

The fourth proportional to 158,400.92, 218,593.20 and 94,738.72 is: 130,739.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,400.92 : 218,593.20 = 94,738.72 : x
  2. Step 2: Convert to fraction form
    158,400.92/218,593.20 = 94,738.72/x
  3. Step 3: Cross multiply
    158,400.92x = 218,593.20 × 94,738.72
  4. Step 4: Simplify right side
    158,400.92x = 20,709,239,968.70
  5. Step 5: Solve for x
    x = 20,709,239,968.70/158,400.92
  6. Step 6: Final answer
    x = 130,739.39

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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.