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Finding the Fourth Proportional to 143,833.95, 215,488.48 and 80,323.47

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Solution

The fourth proportional to 143,833.95, 215,488.48 and 80,323.47 is: 120,338.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,833.95 : 215,488.48 = 80,323.47 : x
  2. Step 2: Convert to fraction form
    143,833.95/215,488.48 = 80,323.47/x
  3. Step 3: Cross multiply
    143,833.95x = 215,488.48 × 80,323.47
  4. Step 4: Simplify right side
    143,833.95x = 17,308,781,180.37
  5. Step 5: Solve for x
    x = 17,308,781,180.37/143,833.95
  6. Step 6: Final answer
    x = 120,338.64

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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.