Home / 137,219.20-189,371.28-76,796.80

Finding the Fourth Proportional to 137,219.20, 189,371.28 and 76,796.80

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Solution

The fourth proportional to 137,219.20, 189,371.28 and 76,796.80 is: 105,984.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,219.20 : 189,371.28 = 76,796.80 : x
  2. Step 2: Convert to fraction form
    137,219.20/189,371.28 = 76,796.80/x
  3. Step 3: Cross multiply
    137,219.20x = 189,371.28 × 76,796.80
  4. Step 4: Simplify right side
    137,219.20x = 14,543,108,315.90
  5. Step 5: Solve for x
    x = 14,543,108,315.90/137,219.20
  6. Step 6: Final answer
    x = 105,984.50

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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.