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Finding the Fourth Proportional to 150,492.75, 207,697.28 and 85,972.20

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Solution

The fourth proportional to 150,492.75, 207,697.28 and 85,972.20 is: 118,651.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,492.75 : 207,697.28 = 85,972.20 : x
  2. Step 2: Convert to fraction form
    150,492.75/207,697.28 = 85,972.20/x
  3. Step 3: Cross multiply
    150,492.75x = 207,697.28 × 85,972.20
  4. Step 4: Simplify right side
    150,492.75x = 17,856,191,665.76
  5. Step 5: Solve for x
    x = 17,856,191,665.76/150,492.75
  6. Step 6: Final answer
    x = 118,651.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.