Home / 129,596.18-178,821.04-72,222.94

Finding the Fourth Proportional to 129,596.18, 178,821.04 and 72,222.94

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Solution

The fourth proportional to 129,596.18, 178,821.04 and 72,222.94 is: 99,655.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,596.18 : 178,821.04 = 72,222.94 : x
  2. Step 2: Convert to fraction form
    129,596.18/178,821.04 = 72,222.94/x
  3. Step 3: Cross multiply
    129,596.18x = 178,821.04 × 72,222.94
  4. Step 4: Simplify right side
    129,596.18x = 12,914,981,242.66
  5. Step 5: Solve for x
    x = 12,914,981,242.66/129,596.18
  6. Step 6: Final answer
    x = 99,655.57

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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.