Home / 123,928.74-171,021.34-67,340.12

Finding the Fourth Proportional to 123,928.74, 171,021.34 and 67,340.12

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Solution

The fourth proportional to 123,928.74, 171,021.34 and 67,340.12 is: 92,929.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,928.74 : 171,021.34 = 67,340.12 : x
  2. Step 2: Convert to fraction form
    123,928.74/171,021.34 = 67,340.12/x
  3. Step 3: Cross multiply
    123,928.74x = 171,021.34 × 67,340.12
  4. Step 4: Simplify right side
    123,928.74x = 11,516,597,558.16
  5. Step 5: Solve for x
    x = 11,516,597,558.16/123,928.74
  6. Step 6: Final answer
    x = 92,929.19

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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.