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Finding the Fourth Proportional to 123,906.88, 170,994.99 and 70,191.88

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Solution

The fourth proportional to 123,906.88, 170,994.99 and 70,191.88 is: 96,866.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,906.88 : 170,994.99 = 70,191.88 : x
  2. Step 2: Convert to fraction form
    123,906.88/170,994.99 = 70,191.88/x
  3. Step 3: Cross multiply
    123,906.88x = 170,994.99 × 70,191.88
  4. Step 4: Simplify right side
    123,906.88x = 12,002,459,818.68
  5. Step 5: Solve for x
    x = 12,002,459,818.68/123,906.88
  6. Step 6: Final answer
    x = 96,866.77

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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.