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Finding the Fourth Proportional to 123,859.55, 170,920.46 and 70,144.95

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Solution

The fourth proportional to 123,859.55, 170,920.46 and 70,144.95 is: 96,796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,859.55 : 170,920.46 = 70,144.95 : x
  2. Step 2: Convert to fraction form
    123,859.55/170,920.46 = 70,144.95/x
  3. Step 3: Cross multiply
    123,859.55x = 170,920.46 × 70,144.95
  4. Step 4: Simplify right side
    123,859.55x = 11,989,206,945.31
  5. Step 5: Solve for x
    x = 11,989,206,945.31/123,859.55
  6. Step 6: Final answer
    x = 96,796.79

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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.