Home / 143,538.98-197,878.49-100,965.38

Finding the Fourth Proportional to 143,538.98, 197,878.49 and 100,965.38

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Solution

The fourth proportional to 143,538.98, 197,878.49 and 100,965.38 is: 139,187.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,538.98 : 197,878.49 = 100,965.38 : x
  2. Step 2: Convert to fraction form
    143,538.98/197,878.49 = 100,965.38/x
  3. Step 3: Cross multiply
    143,538.98x = 197,878.49 × 100,965.38
  4. Step 4: Simplify right side
    143,538.98x = 19,978,875,442.46
  5. Step 5: Solve for x
    x = 19,978,875,442.46/143,538.98
  6. Step 6: Final answer
    x = 139,187.81

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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.