Home / 194,139.10-291,208.65-115,212.70

Finding the Fourth Proportional to 194,139.10, 291,208.65 and 115,212.70

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Solution

The fourth proportional to 194,139.10, 291,208.65 and 115,212.70 is: 172,819.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,139.10 : 291,208.65 = 115,212.70 : x
  2. Step 2: Convert to fraction form
    194,139.10/291,208.65 = 115,212.70/x
  3. Step 3: Cross multiply
    194,139.10x = 291,208.65 × 115,212.70
  4. Step 4: Simplify right side
    194,139.10x = 33,550,934,829.86
  5. Step 5: Solve for x
    x = 33,550,934,829.86/194,139.10
  6. Step 6: Final answer
    x = 172,819.05

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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.