Home / 142,056.24-196,035.90-78,392.64

Finding the Fourth Proportional to 142,056.24, 196,035.90 and 78,392.64

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Solution

The fourth proportional to 142,056.24, 196,035.90 and 78,392.64 is: 108,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,056.24 : 196,035.90 = 78,392.64 : x
  2. Step 2: Convert to fraction form
    142,056.24/196,035.90 = 78,392.64/x
  3. Step 3: Cross multiply
    142,056.24x = 196,035.90 × 78,392.64
  4. Step 4: Simplify right side
    142,056.24x = 15,367,771,735.78
  5. Step 5: Solve for x
    x = 15,367,771,735.78/142,056.24
  6. Step 6: Final answer
    x = 108,180.90

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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.