Home / 131,640.64-197,339.81-71,581.37

Finding the Fourth Proportional to 131,640.64, 197,339.81 and 71,581.37

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Solution

The fourth proportional to 131,640.64, 197,339.81 and 71,581.37 is: 107,306.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,640.64 : 197,339.81 = 71,581.37 : x
  2. Step 2: Convert to fraction form
    131,640.64/197,339.81 = 71,581.37/x
  3. Step 3: Cross multiply
    131,640.64x = 197,339.81 × 71,581.37
  4. Step 4: Simplify right side
    131,640.64x = 14,125,853,955.34
  5. Step 5: Solve for x
    x = 14,125,853,955.34/131,640.64
  6. Step 6: Final answer
    x = 107,306.18

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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.