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Finding the Fourth Proportional to 143,483.59, 214,928.92 and 84,140.56

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Solution

The fourth proportional to 143,483.59, 214,928.92 and 84,140.56 is: 126,036.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,483.59 : 214,928.92 = 84,140.56 : x
  2. Step 2: Convert to fraction form
    143,483.59/214,928.92 = 84,140.56/x
  3. Step 3: Cross multiply
    143,483.59x = 214,928.92 × 84,140.56
  4. Step 4: Simplify right side
    143,483.59x = 18,084,239,689.00
  5. Step 5: Solve for x
    x = 18,084,239,689.00/143,483.59
  6. Step 6: Final answer
    x = 126,036.99

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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.