Home / 143,539.47-197,879.18-100,965.87

Finding the Fourth Proportional to 143,539.47, 197,879.18 and 100,965.87

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Solution

The fourth proportional to 143,539.47, 197,879.18 and 100,965.87 is: 139,188.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,539.47 : 197,879.18 = 100,965.87 : x
  2. Step 2: Convert to fraction form
    143,539.47/197,879.18 = 100,965.87/x
  3. Step 3: Cross multiply
    143,539.47x = 197,879.18 × 100,965.87
  4. Step 4: Simplify right side
    143,539.47x = 19,979,043,563.59
  5. Step 5: Solve for x
    x = 19,979,043,563.59/143,539.47
  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.