Home / 118,868.20-178,302.30-92,429.80

Finding the Fourth Proportional to 118,868.20, 178,302.30 and 92,429.80

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Solution

The fourth proportional to 118,868.20, 178,302.30 and 92,429.80 is: 138,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,868.20 : 178,302.30 = 92,429.80 : x
  2. Step 2: Convert to fraction form
    118,868.20/178,302.30 = 92,429.80/x
  3. Step 3: Cross multiply
    118,868.20x = 178,302.30 × 92,429.80
  4. Step 4: Simplify right side
    118,868.20x = 16,480,445,928.54
  5. Step 5: Solve for x
    x = 16,480,445,928.54/118,868.20
  6. Step 6: Final answer
    x = 138,644.70

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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.