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Finding the Fourth Proportional to 79,266.78, 118,899.92 and 20,102.31

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Solution

The fourth proportional to 79,266.78, 118,899.92 and 20,102.31 is: 30,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,266.78 : 118,899.92 = 20,102.31 : x
  2. Step 2: Convert to fraction form
    79,266.78/118,899.92 = 20,102.31/x
  3. Step 3: Cross multiply
    79,266.78x = 118,899.92 × 20,102.31
  4. Step 4: Simplify right side
    79,266.78x = 2,390,162,950.30
  5. Step 5: Solve for x
    x = 2,390,162,950.30/79,266.78
  6. Step 6: Final answer
    x = 30,153.40

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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.