Home / 187,173.09-280,728.88-67,205.21

Finding the Fourth Proportional to 187,173.09, 280,728.88 and 67,205.21

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Solution

The fourth proportional to 187,173.09, 280,728.88 and 67,205.21 is: 100,796.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,173.09 : 280,728.88 = 67,205.21 : x
  2. Step 2: Convert to fraction form
    187,173.09/280,728.88 = 67,205.21/x
  3. Step 3: Cross multiply
    187,173.09x = 280,728.88 × 67,205.21
  4. Step 4: Simplify right side
    187,173.09x = 18,866,441,929.82
  5. Step 5: Solve for x
    x = 18,866,441,929.82/187,173.09
  6. Step 6: Final answer
    x = 100,796.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.