Home / 123,334.40-170,147.16-72,321.23

Finding the Fourth Proportional to 123,334.40, 170,147.16 and 72,321.23

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Solution

The fourth proportional to 123,334.40, 170,147.16 and 72,321.23 is: 99,771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,334.40 : 170,147.16 = 72,321.23 : x
  2. Step 2: Convert to fraction form
    123,334.40/170,147.16 = 72,321.23/x
  3. Step 3: Cross multiply
    123,334.40x = 170,147.16 × 72,321.23
  4. Step 4: Simplify right side
    123,334.40x = 12,305,251,892.21
  5. Step 5: Solve for x
    x = 12,305,251,892.21/123,334.40
  6. Step 6: Final answer
    x = 99,771.45

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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.