Home / 143,972.56-216,021.21-77,334.94

Finding the Fourth Proportional to 143,972.56, 216,021.21 and 77,334.94

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Solution

The fourth proportional to 143,972.56, 216,021.21 and 77,334.94 is: 116,035.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,972.56 : 216,021.21 = 77,334.94 : x
  2. Step 2: Convert to fraction form
    143,972.56/216,021.21 = 77,334.94/x
  3. Step 3: Cross multiply
    143,972.56x = 216,021.21 × 77,334.94
  4. Step 4: Simplify right side
    143,972.56x = 16,705,987,314.08
  5. Step 5: Solve for x
    x = 16,705,987,314.08/143,972.56
  6. Step 6: Final answer
    x = 116,035.91

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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.