Home / 142,877.76-197,170.38-79,215.54

Finding the Fourth Proportional to 142,877.76, 197,170.38 and 79,215.54

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Solution

The fourth proportional to 142,877.76, 197,170.38 and 79,215.54 is: 109,316.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,877.76 : 197,170.38 = 79,215.54 : x
  2. Step 2: Convert to fraction form
    142,877.76/197,170.38 = 79,215.54/x
  3. Step 3: Cross multiply
    142,877.76x = 197,170.38 × 79,215.54
  4. Step 4: Simplify right side
    142,877.76x = 15,618,958,123.71
  5. Step 5: Solve for x
    x = 15,618,958,123.71/142,877.76
  6. Step 6: Final answer
    x = 109,316.93

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1.5x scale

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.