Home / 143,442.39-197,957.49-79,778.82

Finding the Fourth Proportional to 143,442.39, 197,957.49 and 79,778.82

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Solution

The fourth proportional to 143,442.39, 197,957.49 and 79,778.82 is: 110,098.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,442.39 : 197,957.49 = 79,778.82 : x
  2. Step 2: Convert to fraction form
    143,442.39/197,957.49 = 79,778.82/x
  3. Step 3: Cross multiply
    143,442.39x = 197,957.49 × 79,778.82
  4. Step 4: Simplify right side
    143,442.39x = 15,792,814,962.36
  5. Step 5: Solve for x
    x = 15,792,814,962.36/143,442.39
  6. Step 6: Final answer
    x = 110,098.66

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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.