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Finding the Fourth Proportional to 92,213.40, 138,320.10 and 64,219.80

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Solution

The fourth proportional to 92,213.40, 138,320.10 and 64,219.80 is: 96,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,213.40 : 138,320.10 = 64,219.80 : x
  2. Step 2: Convert to fraction form
    92,213.40/138,320.10 = 64,219.80/x
  3. Step 3: Cross multiply
    92,213.40x = 138,320.10 × 64,219.80
  4. Step 4: Simplify right side
    92,213.40x = 8,882,889,157.98
  5. Step 5: Solve for x
    x = 8,882,889,157.98/92,213.40
  6. Step 6: Final answer
    x = 96,329.70

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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.