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Finding the Fourth Proportional to 248,102.60, 372,147.01 and 79,621.58

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Solution

The fourth proportional to 248,102.60, 372,147.01 and 79,621.58 is: 119,430.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,102.60 : 372,147.01 = 79,621.58 : x
  2. Step 2: Convert to fraction form
    248,102.60/372,147.01 = 79,621.58/x
  3. Step 3: Cross multiply
    248,102.60x = 372,147.01 × 79,621.58
  4. Step 4: Simplify right side
    248,102.60x = 29,630,933,659.79
  5. Step 5: Solve for x
    x = 29,630,933,659.79/248,102.60
  6. Step 6: Final answer
    x = 119,430.16

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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.