Home / 131,730.30-197,207.26-81,649.22

Finding the Fourth Proportional to 131,730.30, 197,207.26 and 81,649.22

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Solution

The fourth proportional to 131,730.30, 197,207.26 and 81,649.22 is: 122,233.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,730.30 : 197,207.26 = 81,649.22 : x
  2. Step 2: Convert to fraction form
    131,730.30/197,207.26 = 81,649.22/x
  3. Step 3: Cross multiply
    131,730.30x = 197,207.26 × 81,649.22
  4. Step 4: Simplify right side
    131,730.30x = 16,101,817,767.18
  5. Step 5: Solve for x
    x = 16,101,817,767.18/131,730.30
  6. Step 6: Final answer
    x = 122,233.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.