Home / 211,178.50-291,433.61-115,685.20

Finding the Fourth Proportional to 211,178.50, 291,433.61 and 115,685.20

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Solution

The fourth proportional to 211,178.50, 291,433.61 and 115,685.20 is: 159,649.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,178.50 : 291,433.61 = 115,685.20 : x
  2. Step 2: Convert to fraction form
    211,178.50/291,433.61 = 115,685.20/x
  3. Step 3: Cross multiply
    211,178.50x = 291,433.61 × 115,685.20
  4. Step 4: Simplify right side
    211,178.50x = 33,714,555,459.57
  5. Step 5: Solve for x
    x = 33,714,555,459.57/211,178.50
  6. Step 6: Final answer
    x = 159,649.56

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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.