Home / 118,868.40-178,308.99-30,122.64

Finding the Fourth Proportional to 118,868.40, 178,308.99 and 30,122.64

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Solution

The fourth proportional to 118,868.40, 178,308.99 and 30,122.64 is: 45,185.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,868.40 : 178,308.99 = 30,122.64 : x
  2. Step 2: Convert to fraction form
    118,868.40/178,308.99 = 30,122.64/x
  3. Step 3: Cross multiply
    118,868.40x = 178,308.99 × 30,122.64
  4. Step 4: Simplify right side
    118,868.40x = 5,371,137,514.53
  5. Step 5: Solve for x
    x = 5,371,137,514.53/118,868.40
  6. Step 6: Final answer
    x = 45,185.58

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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.