Home / 142,824.39-197,104.10-81,575.92

Finding the Fourth Proportional to 142,824.39, 197,104.10 and 81,575.92

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Solution

The fourth proportional to 142,824.39, 197,104.10 and 81,575.92 is: 112,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,824.39 : 197,104.10 = 81,575.92 : x
  2. Step 2: Convert to fraction form
    142,824.39/197,104.10 = 81,575.92/x
  3. Step 3: Cross multiply
    142,824.39x = 197,104.10 × 81,575.92
  4. Step 4: Simplify right side
    142,824.39x = 16,078,948,293.27
  5. Step 5: Solve for x
    x = 16,078,948,293.27/142,824.39
  6. Step 6: Final answer
    x = 112,578.45

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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.