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Finding the Fourth Proportional to 143,822.80, 215,539.80 and 127,104.40

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Solution

The fourth proportional to 143,822.80, 215,539.80 and 127,104.40 is: 190,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,822.80 : 215,539.80 = 127,104.40 : x
  2. Step 2: Convert to fraction form
    143,822.80/215,539.80 = 127,104.40/x
  3. Step 3: Cross multiply
    143,822.80x = 215,539.80 × 127,104.40
  4. Step 4: Simplify right side
    143,822.80x = 27,396,056,955.12
  5. Step 5: Solve for x
    x = 27,396,056,955.12/143,822.80
  6. Step 6: Final answer
    x = 190,484.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.