Home / 143,039.18-197,403.30-79,376.97

Finding the Fourth Proportional to 143,039.18, 197,403.30 and 79,376.97

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Solution

The fourth proportional to 143,039.18, 197,403.30 and 79,376.97 is: 109,545.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,039.18 : 197,403.30 = 79,376.97 : x
  2. Step 2: Convert to fraction form
    143,039.18/197,403.30 = 79,376.97/x
  3. Step 3: Cross multiply
    143,039.18x = 197,403.30 × 79,376.97
  4. Step 4: Simplify right side
    143,039.18x = 15,669,275,822.00
  5. Step 5: Solve for x
    x = 15,669,275,822.00/143,039.18
  6. Step 6: Final answer
    x = 109,545.35

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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.