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Finding the Fourth Proportional to 143,382.80, 214,636.80 and 127,636.40

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Solution

The fourth proportional to 143,382.80, 214,636.80 and 127,636.40 is: 191,065.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,382.80 : 214,636.80 = 127,636.40 : x
  2. Step 2: Convert to fraction form
    143,382.80/214,636.80 = 127,636.40/x
  3. Step 3: Cross multiply
    143,382.80x = 214,636.80 × 127,636.40
  4. Step 4: Simplify right side
    143,382.80x = 27,395,468,459.52
  5. Step 5: Solve for x
    x = 27,395,468,459.52/143,382.80
  6. Step 6: Final answer
    x = 191,065.24

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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.