Home / 142,972.29-197,325.41-79,330.59

Finding the Fourth Proportional to 142,972.29, 197,325.41 and 79,330.59

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Solution

The fourth proportional to 142,972.29, 197,325.41 and 79,330.59 is: 109,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,972.29 : 197,325.41 = 79,330.59 : x
  2. Step 2: Convert to fraction form
    142,972.29/197,325.41 = 79,330.59/x
  3. Step 3: Cross multiply
    142,972.29x = 197,325.41 × 79,330.59
  4. Step 4: Simplify right side
    142,972.29x = 15,653,940,800.64
  5. Step 5: Solve for x
    x = 15,653,940,800.64/142,972.29
  6. Step 6: Final answer
    x = 109,489.33

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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.