Home / 142,845.08-197,124.66-82,415

Finding the Fourth Proportional to 142,845.08, 197,124.66 and 82,415

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Solution

The fourth proportional to 142,845.08, 197,124.66 and 82,415 is: 113,731.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,845.08 : 197,124.66 = 82,415 : x
  2. Step 2: Convert to fraction form
    142,845.08/197,124.66 = 82,415/x
  3. Step 3: Cross multiply
    142,845.08x = 197,124.66 × 82,415
  4. Step 4: Simplify right side
    142,845.08x = 16,246,028,853.90
  5. Step 5: Solve for x
    x = 16,246,028,853.90/142,845.08
  6. Step 6: Final answer
    x = 113,731.81

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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.