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Finding the Fourth Proportional to 123,635.68, 170,620.49 and 69,928.63

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Solution

The fourth proportional to 123,635.68, 170,620.49 and 69,928.63 is: 96,503.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,635.68 : 170,620.49 = 69,928.63 : x
  2. Step 2: Convert to fraction form
    123,635.68/170,620.49 = 69,928.63/x
  3. Step 3: Cross multiply
    123,635.68x = 170,620.49 × 69,928.63
  4. Step 4: Simplify right side
    123,635.68x = 11,931,257,115.63
  5. Step 5: Solve for x
    x = 11,931,257,115.63/123,635.68
  6. Step 6: Final answer
    x = 96,503.35

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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.