Home / 131,663.34-197,107.29-81,582.48

Finding the Fourth Proportional to 131,663.34, 197,107.29 and 81,582.48

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Solution

The fourth proportional to 131,663.34, 197,107.29 and 81,582.48 is: 122,133.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,663.34 : 197,107.29 = 81,582.48 : x
  2. Step 2: Convert to fraction form
    131,663.34/197,107.29 = 81,582.48/x
  3. Step 3: Cross multiply
    131,663.34x = 197,107.29 × 81,582.48
  4. Step 4: Simplify right side
    131,663.34x = 16,080,501,544.28
  5. Step 5: Solve for x
    x = 16,080,501,544.28/131,663.34
  6. Step 6: Final answer
    x = 122,133.48

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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.