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Finding the Fourth Proportional to 109,622.70, 151,311.65 and 64,310.49

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Solution

The fourth proportional to 109,622.70, 151,311.65 and 64,310.49 is: 88,767.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,622.70 : 151,311.65 = 64,310.49 : x
  2. Step 2: Convert to fraction form
    109,622.70/151,311.65 = 64,310.49/x
  3. Step 3: Cross multiply
    109,622.70x = 151,311.65 × 64,310.49
  4. Step 4: Simplify right side
    109,622.70x = 9,730,926,032.66
  5. Step 5: Solve for x
    x = 9,730,926,032.66/109,622.70
  6. Step 6: Final answer
    x = 88,767.44

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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.