Home / 143,652.13-198,238.04-79,120.12

Finding the Fourth Proportional to 143,652.13, 198,238.04 and 79,120.12

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Solution

The fourth proportional to 143,652.13, 198,238.04 and 79,120.12 is: 109,184.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,652.13 : 198,238.04 = 79,120.12 : x
  2. Step 2: Convert to fraction form
    143,652.13/198,238.04 = 79,120.12/x
  3. Step 3: Cross multiply
    143,652.13x = 198,238.04 × 79,120.12
  4. Step 4: Simplify right side
    143,652.13x = 15,684,617,513.36
  5. Step 5: Solve for x
    x = 15,684,617,513.36/143,652.13
  6. Step 6: Final answer
    x = 109,184.72

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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.