Home / 142,269.95-196,336.49-78,611.87

Finding the Fourth Proportional to 142,269.95, 196,336.49 and 78,611.87

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Solution

The fourth proportional to 142,269.95, 196,336.49 and 78,611.87 is: 108,486.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,269.95 : 196,336.49 = 78,611.87 : x
  2. Step 2: Convert to fraction form
    142,269.95/196,336.49 = 78,611.87/x
  3. Step 3: Cross multiply
    142,269.95x = 196,336.49 × 78,611.87
  4. Step 4: Simplify right side
    142,269.95x = 15,434,377,253.39
  5. Step 5: Solve for x
    x = 15,434,377,253.39/142,269.95
  6. Step 6: Final answer
    x = 108,486.56

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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.