Home / 143,422.14-215,059.75-84,275.58

Finding the Fourth Proportional to 143,422.14, 215,059.75 and 84,275.58

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Solution

The fourth proportional to 143,422.14, 215,059.75 and 84,275.58 is: 126,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,422.14 : 215,059.75 = 84,275.58 : x
  2. Step 2: Convert to fraction form
    143,422.14/215,059.75 = 84,275.58/x
  3. Step 3: Cross multiply
    143,422.14x = 215,059.75 × 84,275.58
  4. Step 4: Simplify right side
    143,422.14x = 18,124,285,165.91
  5. Step 5: Solve for x
    x = 18,124,285,165.91/143,422.14
  6. Step 6: Final answer
    x = 126,370.20

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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.