Home / 142,877.44-197,178.06-79,213.87

Finding the Fourth Proportional to 142,877.44, 197,178.06 and 79,213.87

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Solution

The fourth proportional to 142,877.44, 197,178.06 and 79,213.87 is: 109,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,877.44 : 197,178.06 = 79,213.87 : x
  2. Step 2: Convert to fraction form
    142,877.44/197,178.06 = 79,213.87/x
  3. Step 3: Cross multiply
    142,877.44x = 197,178.06 × 79,213.87
  4. Step 4: Simplify right side
    142,877.44x = 15,619,237,211.69
  5. Step 5: Solve for x
    x = 15,619,237,211.69/142,877.44
  6. Step 6: Final answer
    x = 109,319.13

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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.