Home / 143,344.81-197,816.07-79,682.05

Finding the Fourth Proportional to 143,344.81, 197,816.07 and 79,682.05

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Solution

The fourth proportional to 143,344.81, 197,816.07 and 79,682.05 is: 109,961.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,344.81 : 197,816.07 = 79,682.05 : x
  2. Step 2: Convert to fraction form
    143,344.81/197,816.07 = 79,682.05/x
  3. Step 3: Cross multiply
    143,344.81x = 197,816.07 × 79,682.05
  4. Step 4: Simplify right side
    143,344.81x = 15,762,389,980.54
  5. Step 5: Solve for x
    x = 15,762,389,980.54/143,344.81
  6. Step 6: Final answer
    x = 109,961.36

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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.