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Finding the Fourth Proportional to 92,142.42, 138,213.48 and 28,968.07

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Solution

The fourth proportional to 92,142.42, 138,213.48 and 28,968.07 is: 43,452.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,142.42 : 138,213.48 = 28,968.07 : x
  2. Step 2: Convert to fraction form
    92,142.42/138,213.48 = 28,968.07/x
  3. Step 3: Cross multiply
    92,142.42x = 138,213.48 × 28,968.07
  4. Step 4: Simplify right side
    92,142.42x = 4,003,777,387.79
  5. Step 5: Solve for x
    x = 4,003,777,387.79/92,142.42
  6. Step 6: Final answer
    x = 43,452.05

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1.5x scale

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.