Home / 120,769.28-181,153.80-79,206.56

Finding the Fourth Proportional to 120,769.28, 181,153.80 and 79,206.56

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Solution

The fourth proportional to 120,769.28, 181,153.80 and 79,206.56 is: 118,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,769.28 : 181,153.80 = 79,206.56 : x
  2. Step 2: Convert to fraction form
    120,769.28/181,153.80 = 79,206.56/x
  3. Step 3: Cross multiply
    120,769.28x = 181,153.80 × 79,206.56
  4. Step 4: Simplify right side
    120,769.28x = 14,348,569,328.93
  5. Step 5: Solve for x
    x = 14,348,569,328.93/120,769.28
  6. Step 6: Final answer
    x = 118,809.76

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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.