Home / 145,069.31-200,184.99-80,542.28

Finding the Fourth Proportional to 145,069.31, 200,184.99 and 80,542.28

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Solution

The fourth proportional to 145,069.31, 200,184.99 and 80,542.28 is: 111,142.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,069.31 : 200,184.99 = 80,542.28 : x
  2. Step 2: Convert to fraction form
    145,069.31/200,184.99 = 80,542.28/x
  3. Step 3: Cross multiply
    145,069.31x = 200,184.99 × 80,542.28
  4. Step 4: Simplify right side
    145,069.31x = 16,123,354,515.45
  5. Step 5: Solve for x
    x = 16,123,354,515.45/145,069.31
  6. Step 6: Final answer
    x = 111,142.43

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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.