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Finding the Fourth Proportional to 92,000.10, 138,000.15 and 28,820.75

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Solution

The fourth proportional to 92,000.10, 138,000.15 and 28,820.75 is: 43,231.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,000.10 : 138,000.15 = 28,820.75 : x
  2. Step 2: Convert to fraction form
    92,000.10/138,000.15 = 28,820.75/x
  3. Step 3: Cross multiply
    92,000.10x = 138,000.15 × 28,820.75
  4. Step 4: Simplify right side
    92,000.10x = 3,977,268,168.11
  5. Step 5: Solve for x
    x = 3,977,268,168.11/92,000.10
  6. Step 6: Final answer
    x = 43,231.13

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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.