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Finding the Fourth Proportional to 123,927.32, 171,019.34 and 67,338.68

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Solution

The fourth proportional to 123,927.32, 171,019.34 and 67,338.68 is: 92,927.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,927.32 : 171,019.34 = 67,338.68 : x
  2. Step 2: Convert to fraction form
    123,927.32/171,019.34 = 67,338.68/x
  3. Step 3: Cross multiply
    123,927.32x = 171,019.34 × 67,338.68
  4. Step 4: Simplify right side
    123,927.32x = 11,516,216,610.07
  5. Step 5: Solve for x
    x = 11,516,216,610.07/123,927.32
  6. Step 6: Final answer
    x = 92,927.18

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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.