Home / 142,269.45-196,335.80-78,611.37

Finding the Fourth Proportional to 142,269.45, 196,335.80 and 78,611.37

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Solution

The fourth proportional to 142,269.45, 196,335.80 and 78,611.37 is: 108,485.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,269.45 : 196,335.80 = 78,611.37 : x
  2. Step 2: Convert to fraction form
    142,269.45/196,335.80 = 78,611.37/x
  3. Step 3: Cross multiply
    142,269.45x = 196,335.80 × 78,611.37
  4. Step 4: Simplify right side
    142,269.45x = 15,434,224,843.31
  5. Step 5: Solve for x
    x = 15,434,224,843.31/142,269.45
  6. Step 6: Final answer
    x = 108,485.87

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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.