Home / 142,788.48-197,049.26-79,127.34

Finding the Fourth Proportional to 142,788.48, 197,049.26 and 79,127.34

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Solution

The fourth proportional to 142,788.48, 197,049.26 and 79,127.34 is: 109,196.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,788.48 : 197,049.26 = 79,127.34 : x
  2. Step 2: Convert to fraction form
    142,788.48/197,049.26 = 79,127.34/x
  3. Step 3: Cross multiply
    142,788.48x = 197,049.26 × 79,127.34
  4. Step 4: Simplify right side
    142,788.48x = 15,591,983,792.77
  5. Step 5: Solve for x
    x = 15,591,983,792.77/142,788.48
  6. Step 6: Final answer
    x = 109,196.37

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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.