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Finding the Fourth Proportional to 143,998.49, 198,491.63 and 98,597.96

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Solution

The fourth proportional to 143,998.49, 198,491.63 and 98,597.96 is: 135,910.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,998.49 : 198,491.63 = 98,597.96 : x
  2. Step 2: Convert to fraction form
    143,998.49/198,491.63 = 98,597.96/x
  3. Step 3: Cross multiply
    143,998.49x = 198,491.63 × 98,597.96
  4. Step 4: Simplify right side
    143,998.49x = 19,570,868,309.63
  5. Step 5: Solve for x
    x = 19,570,868,309.63/143,998.49
  6. Step 6: Final answer
    x = 135,910.24

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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.