Home / 142,606.20-196,795.26-78,946.68

Finding the Fourth Proportional to 142,606.20, 196,795.26 and 78,946.68

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Solution

The fourth proportional to 142,606.20, 196,795.26 and 78,946.68 is: 108,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,606.20 : 196,795.26 = 78,946.68 : x
  2. Step 2: Convert to fraction form
    142,606.20/196,795.26 = 78,946.68/x
  3. Step 3: Cross multiply
    142,606.20x = 196,795.26 × 78,946.68
  4. Step 4: Simplify right side
    142,606.20x = 15,536,332,416.74
  5. Step 5: Solve for x
    x = 15,536,332,416.74/142,606.20
  6. Step 6: Final answer
    x = 108,945.70

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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.