Home / 123,778.04-170,813.92-67,189.40

Finding the Fourth Proportional to 123,778.04, 170,813.92 and 67,189.40

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Solution

The fourth proportional to 123,778.04, 170,813.92 and 67,189.40 is: 92,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,778.04 : 170,813.92 = 67,189.40 : x
  2. Step 2: Convert to fraction form
    123,778.04/170,813.92 = 67,189.40/x
  3. Step 3: Cross multiply
    123,778.04x = 170,813.92 × 67,189.40
  4. Step 4: Simplify right side
    123,778.04x = 11,476,884,796.45
  5. Step 5: Solve for x
    x = 11,476,884,796.45/123,778.04
  6. Step 6: Final answer
    x = 92,721.49

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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.