Home / 296,743.10-445,115.20-72,103.72

Finding the Fourth Proportional to 296,743.10, 445,115.20 and 72,103.72

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Solution

The fourth proportional to 296,743.10, 445,115.20 and 72,103.72 is: 108,155.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,743.10 : 445,115.20 = 72,103.72 : x
  2. Step 2: Convert to fraction form
    296,743.10/445,115.20 = 72,103.72/x
  3. Step 3: Cross multiply
    296,743.10x = 445,115.20 × 72,103.72
  4. Step 4: Simplify right side
    296,743.10x = 32,094,461,425.28
  5. Step 5: Solve for x
    x = 32,094,461,425.28/296,743.10
  6. Step 6: Final answer
    x = 108,155.71

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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.