Home / 145,310.72-200,618.24-115,217.60

Finding the Fourth Proportional to 145,310.72, 200,618.24 and 115,217.60

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Solution

The fourth proportional to 145,310.72, 200,618.24 and 115,217.60 is: 159,071.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,310.72 : 200,618.24 = 115,217.60 : x
  2. Step 2: Convert to fraction form
    145,310.72/200,618.24 = 115,217.60/x
  3. Step 3: Cross multiply
    145,310.72x = 200,618.24 × 115,217.60
  4. Step 4: Simplify right side
    145,310.72x = 23,114,752,129.02
  5. Step 5: Solve for x
    x = 23,114,752,129.02/145,310.72
  6. Step 6: Final answer
    x = 159,071.21

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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.