Home / 142,993.21-197,354.24-79,351.51

Finding the Fourth Proportional to 142,993.21, 197,354.24 and 79,351.51

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Solution

The fourth proportional to 142,993.21, 197,354.24 and 79,351.51 is: 109,518.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,993.21 : 197,354.24 = 79,351.51 : x
  2. Step 2: Convert to fraction form
    142,993.21/197,354.24 = 79,351.51/x
  3. Step 3: Cross multiply
    142,993.21x = 197,354.24 × 79,351.51
  4. Step 4: Simplify right side
    142,993.21x = 15,660,356,948.90
  5. Step 5: Solve for x
    x = 15,660,356,948.90/142,993.21
  6. Step 6: Final answer
    x = 109,518.19

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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.