Home / 143,107.48-197,478.42-79,440.25

Finding the Fourth Proportional to 143,107.48, 197,478.42 and 79,440.25

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Solution

The fourth proportional to 143,107.48, 197,478.42 and 79,440.25 is: 109,622.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,107.48 : 197,478.42 = 79,440.25 : x
  2. Step 2: Convert to fraction form
    143,107.48/197,478.42 = 79,440.25/x
  3. Step 3: Cross multiply
    143,107.48x = 197,478.42 × 79,440.25
  4. Step 4: Simplify right side
    143,107.48x = 15,687,733,669.81
  5. Step 5: Solve for x
    x = 15,687,733,669.81/143,107.48
  6. Step 6: Final answer
    x = 109,622.04

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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.