Home / 142,653.46-196,861.74-78,991.24

Finding the Fourth Proportional to 142,653.46, 196,861.74 and 78,991.24

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Solution

The fourth proportional to 142,653.46, 196,861.74 and 78,991.24 is: 109,007.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,653.46 : 196,861.74 = 78,991.24 : x
  2. Step 2: Convert to fraction form
    142,653.46/196,861.74 = 78,991.24/x
  3. Step 3: Cross multiply
    142,653.46x = 196,861.74 × 78,991.24
  4. Step 4: Simplify right side
    142,653.46x = 15,550,352,951.16
  5. Step 5: Solve for x
    x = 15,550,352,951.16/142,653.46
  6. Step 6: Final answer
    x = 109,007.89

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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.