Home / 143,143.88-197,546.75-79,485.77

Finding the Fourth Proportional to 143,143.88, 197,546.75 and 79,485.77

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Solution

The fourth proportional to 143,143.88, 197,546.75 and 79,485.77 is: 109,694.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,143.88 : 197,546.75 = 79,485.77 : x
  2. Step 2: Convert to fraction form
    143,143.88/197,546.75 = 79,485.77/x
  3. Step 3: Cross multiply
    143,143.88x = 197,546.75 × 79,485.77
  4. Step 4: Simplify right side
    143,143.88x = 15,702,155,929.26
  5. Step 5: Solve for x
    x = 15,702,155,929.26/143,143.88
  6. Step 6: Final answer
    x = 109,694.92

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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.