Home / 145,107.75-200,261.27-80,589.43

Finding the Fourth Proportional to 145,107.75, 200,261.27 and 80,589.43

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Solution

The fourth proportional to 145,107.75, 200,261.27 and 80,589.43 is: 111,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,107.75 : 200,261.27 = 80,589.43 : x
  2. Step 2: Convert to fraction form
    145,107.75/200,261.27 = 80,589.43/x
  3. Step 3: Cross multiply
    145,107.75x = 200,261.27 × 80,589.43
  4. Step 4: Simplify right side
    145,107.75x = 16,138,941,301.20
  5. Step 5: Solve for x
    x = 16,138,941,301.20/145,107.75
  6. Step 6: Final answer
    x = 111,220.40

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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.