Home / 143,186.23-197,599.44-78,658.19

Finding the Fourth Proportional to 143,186.23, 197,599.44 and 78,658.19

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Solution

The fourth proportional to 143,186.23, 197,599.44 and 78,658.19 is: 108,549.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,186.23 : 197,599.44 = 78,658.19 : x
  2. Step 2: Convert to fraction form
    143,186.23/197,599.44 = 78,658.19/x
  3. Step 3: Cross multiply
    143,186.23x = 197,599.44 × 78,658.19
  4. Step 4: Simplify right side
    143,186.23x = 15,542,814,295.41
  5. Step 5: Solve for x
    x = 15,542,814,295.41/143,186.23
  6. Step 6: Final answer
    x = 108,549.64

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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.