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Finding the Fourth Proportional to 109,612.67, 151,290.76 and 64,305.21

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Solution

The fourth proportional to 109,612.67, 151,290.76 and 64,305.21 is: 88,756.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,612.67 : 151,290.76 = 64,305.21 : x
  2. Step 2: Convert to fraction form
    109,612.67/151,290.76 = 64,305.21/x
  3. Step 3: Cross multiply
    109,612.67x = 151,290.76 × 64,305.21
  4. Step 4: Simplify right side
    109,612.67x = 9,728,784,253.62
  5. Step 5: Solve for x
    x = 9,728,784,253.62/109,612.67
  6. Step 6: Final answer
    x = 88,756.02

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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.