Home / 118,934.10-178,401.15-79,211.70

Finding the Fourth Proportional to 118,934.10, 178,401.15 and 79,211.70

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Solution

The fourth proportional to 118,934.10, 178,401.15 and 79,211.70 is: 118,817.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,934.10 : 178,401.15 = 79,211.70 : x
  2. Step 2: Convert to fraction form
    118,934.10/178,401.15 = 79,211.70/x
  3. Step 3: Cross multiply
    118,934.10x = 178,401.15 × 79,211.70
  4. Step 4: Simplify right side
    118,934.10x = 14,131,458,373.46
  5. Step 5: Solve for x
    x = 14,131,458,373.46/118,934.10
  6. Step 6: Final answer
    x = 118,817.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.