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Finding the Fourth Proportional to 75,181.70, 112,801.35 and 74,000.90

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Solution

The fourth proportional to 75,181.70, 112,801.35 and 74,000.90 is: 111,029.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,181.70 : 112,801.35 = 74,000.90 : x
  2. Step 2: Convert to fraction form
    75,181.70/112,801.35 = 74,000.90/x
  3. Step 3: Cross multiply
    75,181.70x = 112,801.35 × 74,000.90
  4. Step 4: Simplify right side
    75,181.70x = 8,347,401,421.22
  5. Step 5: Solve for x
    x = 8,347,401,421.22/75,181.70
  6. Step 6: Final answer
    x = 111,029.70

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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.