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Finding the Fourth Proportional to 123,467.27, 170,384.84 and 66,878.64

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Solution

The fourth proportional to 123,467.27, 170,384.84 and 66,878.64 is: 92,292.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,467.27 : 170,384.84 = 66,878.64 : x
  2. Step 2: Convert to fraction form
    123,467.27/170,384.84 = 66,878.64/x
  3. Step 3: Cross multiply
    123,467.27x = 170,384.84 × 66,878.64
  4. Step 4: Simplify right side
    123,467.27x = 11,395,106,041.42
  5. Step 5: Solve for x
    x = 11,395,106,041.42/123,467.27
  6. Step 6: Final answer
    x = 92,292.53

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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.