Home / 143,664.72-198,239.91-82,407.70

Finding the Fourth Proportional to 143,664.72, 198,239.91 and 82,407.70

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Solution

The fourth proportional to 143,664.72, 198,239.91 and 82,407.70 is: 113,712.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,664.72 : 198,239.91 = 82,407.70 : x
  2. Step 2: Convert to fraction form
    143,664.72/198,239.91 = 82,407.70/x
  3. Step 3: Cross multiply
    143,664.72x = 198,239.91 × 82,407.70
  4. Step 4: Simplify right side
    143,664.72x = 16,336,495,031.31
  5. Step 5: Solve for x
    x = 16,336,495,031.31/143,664.72
  6. Step 6: Final answer
    x = 113,712.64

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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.