Home / 142,472.46-196,613.54-77,940.31

Finding the Fourth Proportional to 142,472.46, 196,613.54 and 77,940.31

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Solution

The fourth proportional to 142,472.46, 196,613.54 and 77,940.31 is: 107,558.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,472.46 : 196,613.54 = 77,940.31 : x
  2. Step 2: Convert to fraction form
    142,472.46/196,613.54 = 77,940.31/x
  3. Step 3: Cross multiply
    142,472.46x = 196,613.54 × 77,940.31
  4. Step 4: Simplify right side
    142,472.46x = 15,324,120,257.80
  5. Step 5: Solve for x
    x = 15,324,120,257.80/142,472.46
  6. Step 6: Final answer
    x = 107,558.47

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1.5x scale

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.