Home / 291,387.20-437,105.55-81,025.13

Finding the Fourth Proportional to 291,387.20, 437,105.55 and 81,025.13

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Solution

The fourth proportional to 291,387.20, 437,105.55 and 81,025.13 is: 121,544.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,387.20 : 437,105.55 = 81,025.13 : x
  2. Step 2: Convert to fraction form
    291,387.20/437,105.55 = 81,025.13/x
  3. Step 3: Cross multiply
    291,387.20x = 437,105.55 × 81,025.13
  4. Step 4: Simplify right side
    291,387.20x = 35,416,531,826.94
  5. Step 5: Solve for x
    x = 35,416,531,826.94/291,387.20
  6. Step 6: Final answer
    x = 121,544.57

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1.5x scale

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.