Home / 142,944.40-197,253.66-79,279.84

Finding the Fourth Proportional to 142,944.40, 197,253.66 and 79,279.84

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Solution

The fourth proportional to 142,944.40, 197,253.66 and 79,279.84 is: 109,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,944.40 : 197,253.66 = 79,279.84 : x
  2. Step 2: Convert to fraction form
    142,944.40/197,253.66 = 79,279.84/x
  3. Step 3: Cross multiply
    142,944.40x = 197,253.66 × 79,279.84
  4. Step 4: Simplify right side
    142,944.40x = 15,638,238,604.21
  5. Step 5: Solve for x
    x = 15,638,238,604.21/142,944.40
  6. Step 6: Final answer
    x = 109,400.85

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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.