Home / 129,369.11-178,611.38-88,601.60

Finding the Fourth Proportional to 129,369.11, 178,611.38 and 88,601.60

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Solution

The fourth proportional to 129,369.11, 178,611.38 and 88,601.60 is: 122,326.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,369.11 : 178,611.38 = 88,601.60 : x
  2. Step 2: Convert to fraction form
    129,369.11/178,611.38 = 88,601.60/x
  3. Step 3: Cross multiply
    129,369.11x = 178,611.38 × 88,601.60
  4. Step 4: Simplify right side
    129,369.11x = 15,825,252,710.14
  5. Step 5: Solve for x
    x = 15,825,252,710.14/129,369.11
  6. Step 6: Final answer
    x = 122,326.37

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1.5x scale

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.