Home / 143,027.32-197,451.22-100,774.48

Finding the Fourth Proportional to 143,027.32, 197,451.22 and 100,774.48

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Solution

The fourth proportional to 143,027.32, 197,451.22 and 100,774.48 is: 139,120.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,027.32 : 197,451.22 = 100,774.48 : x
  2. Step 2: Convert to fraction form
    143,027.32/197,451.22 = 100,774.48/x
  3. Step 3: Cross multiply
    143,027.32x = 197,451.22 × 100,774.48
  4. Step 4: Simplify right side
    143,027.32x = 19,898,044,020.87
  5. Step 5: Solve for x
    x = 19,898,044,020.87/143,027.32
  6. Step 6: Final answer
    x = 139,120.58

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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.