Home / 142,180.36-196,207.32-78,516.88

Finding the Fourth Proportional to 142,180.36, 196,207.32 and 78,516.88

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Solution

The fourth proportional to 142,180.36, 196,207.32 and 78,516.88 is: 108,352.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,180.36 : 196,207.32 = 78,516.88 : x
  2. Step 2: Convert to fraction form
    142,180.36/196,207.32 = 78,516.88/x
  3. Step 3: Cross multiply
    142,180.36x = 196,207.32 × 78,516.88
  4. Step 4: Simplify right side
    142,180.36x = 15,405,586,599.56
  5. Step 5: Solve for x
    x = 15,405,586,599.56/142,180.36
  6. Step 6: Final answer
    x = 108,352.42

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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.