Home / 143,143.85-197,544.53-79,487.57

Finding the Fourth Proportional to 143,143.85, 197,544.53 and 79,487.57

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Solution

The fourth proportional to 143,143.85, 197,544.53 and 79,487.57 is: 109,696.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,143.85 : 197,544.53 = 79,487.57 : x
  2. Step 2: Convert to fraction form
    143,143.85/197,544.53 = 79,487.57/x
  3. Step 3: Cross multiply
    143,143.85x = 197,544.53 × 79,487.57
  4. Step 4: Simplify right side
    143,143.85x = 15,702,333,867.49
  5. Step 5: Solve for x
    x = 15,702,333,867.49/143,143.85
  6. Step 6: Final answer
    x = 109,696.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.