Home / 143,711.91-215,474.00-68,829.66

Finding the Fourth Proportional to 143,711.91, 215,474.00 and 68,829.66

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Solution

The fourth proportional to 143,711.91, 215,474.00 and 68,829.66 is: 103,199.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,711.91 : 215,474.00 = 68,829.66 : x
  2. Step 2: Convert to fraction form
    143,711.91/215,474.00 = 68,829.66/x
  3. Step 3: Cross multiply
    143,711.91x = 215,474.00 × 68,829.66
  4. Step 4: Simplify right side
    143,711.91x = 14,831,001,814.69
  5. Step 5: Solve for x
    x = 14,831,001,814.69/143,711.91
  6. Step 6: Final answer
    x = 103,199.53

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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.