Home / 129,350,910.15-178,504,981.05-73,596,329.21

Finding the Fourth Proportional to 129,350,910.15, 178,504,981.05 and 73,596,329.21

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Solution

The fourth proportional to 129,350,910.15, 178,504,981.05 and 73,596,329.21 is: 101,563,346.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,350,910.15 : 178,504,981.05 = 73,596,329.21 : x
  2. Step 2: Convert to fraction form
    129,350,910.15/178,504,981.05 = 73,596,329.21/x
  3. Step 3: Cross multiply
    129,350,910.15x = 178,504,981.05 × 73,596,329.21
  4. Step 4: Simplify right side
    129,350,910.15x = 13,137,311,350,284,422
  5. Step 5: Solve for x
    x = 13,137,311,350,284,422/129,350,910.15
  6. Step 6: Final answer
    x = 101,563,346.83

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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.