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Finding the Fourth Proportional to 123,855.32, 170,922.30 and 70,138.88

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Solution

The fourth proportional to 123,855.32, 170,922.30 and 70,138.88 is: 96,792.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,855.32 : 170,922.30 = 70,138.88 : x
  2. Step 2: Convert to fraction form
    123,855.32/170,922.30 = 70,138.88/x
  3. Step 3: Cross multiply
    123,855.32x = 170,922.30 × 70,138.88
  4. Step 4: Simplify right side
    123,855.32x = 11,988,298,689.02
  5. Step 5: Solve for x
    x = 11,988,298,689.02/123,855.32
  6. Step 6: Final answer
    x = 96,792.76

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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.