Home / 143,136.20-197,524.16-79,472.36

Finding the Fourth Proportional to 143,136.20, 197,524.16 and 79,472.36

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Solution

The fourth proportional to 143,136.20, 197,524.16 and 79,472.36 is: 109,669.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,136.20 : 197,524.16 = 79,472.36 : x
  2. Step 2: Convert to fraction form
    143,136.20/197,524.16 = 79,472.36/x
  3. Step 3: Cross multiply
    143,136.20x = 197,524.16 × 79,472.36
  4. Step 4: Simplify right side
    143,136.20x = 15,697,711,152.22
  5. Step 5: Solve for x
    x = 15,697,711,152.22/143,136.20
  6. Step 6: Final answer
    x = 109,669.75

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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.