Home / 142,583.30-196,744.34-78,920.94

Finding the Fourth Proportional to 142,583.30, 196,744.34 and 78,920.94

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Solution

The fourth proportional to 142,583.30, 196,744.34 and 78,920.94 is: 108,899.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,583.30 : 196,744.34 = 78,920.94 : x
  2. Step 2: Convert to fraction form
    142,583.30/196,744.34 = 78,920.94/x
  3. Step 3: Cross multiply
    142,583.30x = 196,744.34 × 78,920.94
  4. Step 4: Simplify right side
    142,583.30x = 15,527,247,857.87
  5. Step 5: Solve for x
    x = 15,527,247,857.87/142,583.30
  6. Step 6: Final answer
    x = 108,899.49

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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.