Home / 143,200.06-197,621.04-79,543.78

Finding the Fourth Proportional to 143,200.06, 197,621.04 and 79,543.78

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Solution

The fourth proportional to 143,200.06, 197,621.04 and 79,543.78 is: 109,773.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,200.06 : 197,621.04 = 79,543.78 : x
  2. Step 2: Convert to fraction form
    143,200.06/197,621.04 = 79,543.78/x
  3. Step 3: Cross multiply
    143,200.06x = 197,621.04 × 79,543.78
  4. Step 4: Simplify right side
    143,200.06x = 15,719,524,529.13
  5. Step 5: Solve for x
    x = 15,719,524,529.13/143,200.06
  6. Step 6: Final answer
    x = 109,773.17

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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.