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Finding the Fourth Proportional to 123,392.91, 170,281.44 and 66,803.88

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Solution

The fourth proportional to 123,392.91, 170,281.44 and 66,803.88 is: 92,188.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,392.91 : 170,281.44 = 66,803.88 : x
  2. Step 2: Convert to fraction form
    123,392.91/170,281.44 = 66,803.88/x
  3. Step 3: Cross multiply
    123,392.91x = 170,281.44 × 66,803.88
  4. Step 4: Simplify right side
    123,392.91x = 11,375,460,032.58
  5. Step 5: Solve for x
    x = 11,375,460,032.58/123,392.91
  6. Step 6: Final answer
    x = 92,188.93

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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.