Home / 143,539.46-197,879.18-100,965.86

Finding the Fourth Proportional to 143,539.46, 197,879.18 and 100,965.86

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Solution

The fourth proportional to 143,539.46, 197,879.18 and 100,965.86 is: 139,188.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,539.46 : 197,879.18 = 100,965.86 : x
  2. Step 2: Convert to fraction form
    143,539.46/197,879.18 = 100,965.86/x
  3. Step 3: Cross multiply
    143,539.46x = 197,879.18 × 100,965.86
  4. Step 4: Simplify right side
    143,539.46x = 19,979,041,584.79
  5. Step 5: Solve for x
    x = 19,979,041,584.79/143,539.46
  6. Step 6: Final answer
    x = 139,188.50

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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.