Home / 215,102.04-322,362.42-81,909.66

Finding the Fourth Proportional to 215,102.04, 322,362.42 and 81,909.66

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Solution

The fourth proportional to 215,102.04, 322,362.42 and 81,909.66 is: 122,753.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,102.04 : 322,362.42 = 81,909.66 : x
  2. Step 2: Convert to fraction form
    215,102.04/322,362.42 = 81,909.66/x
  3. Step 3: Cross multiply
    215,102.04x = 322,362.42 × 81,909.66
  4. Step 4: Simplify right side
    215,102.04x = 26,404,596,218.98
  5. Step 5: Solve for x
    x = 26,404,596,218.98/215,102.04
  6. Step 6: Final answer
    x = 122,753.82

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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.