Home / 142,522.11-196,672.26-78,856.11

Finding the Fourth Proportional to 142,522.11, 196,672.26 and 78,856.11

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Solution

The fourth proportional to 142,522.11, 196,672.26 and 78,856.11 is: 108,816.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,522.11 : 196,672.26 = 78,856.11 : x
  2. Step 2: Convert to fraction form
    142,522.11/196,672.26 = 78,856.11/x
  3. Step 3: Cross multiply
    142,522.11x = 196,672.26 × 78,856.11
  4. Step 4: Simplify right side
    142,522.11x = 15,508,809,368.51
  5. Step 5: Solve for x
    x = 15,508,809,368.51/142,522.11
  6. Step 6: Final answer
    x = 108,816.87

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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.