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Finding the Fourth Proportional to 122,697.21, 169,319.70 and 68,248.20

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Solution

The fourth proportional to 122,697.21, 169,319.70 and 68,248.20 is: 94,181.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,697.21 : 169,319.70 = 68,248.20 : x
  2. Step 2: Convert to fraction form
    122,697.21/169,319.70 = 68,248.20/x
  3. Step 3: Cross multiply
    122,697.21x = 169,319.70 × 68,248.20
  4. Step 4: Simplify right side
    122,697.21x = 11,555,764,432.07
  5. Step 5: Solve for x
    x = 11,555,764,432.07/122,697.21
  6. Step 6: Final answer
    x = 94,181.15

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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.