Home / 291,500.64-437,276.16-81,141.12

Finding the Fourth Proportional to 291,500.64, 437,276.16 and 81,141.12

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Solution

The fourth proportional to 291,500.64, 437,276.16 and 81,141.12 is: 121,718.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,500.64 : 437,276.16 = 81,141.12 : x
  2. Step 2: Convert to fraction form
    291,500.64/437,276.16 = 81,141.12/x
  3. Step 3: Cross multiply
    291,500.64x = 437,276.16 × 81,141.12
  4. Step 4: Simplify right side
    291,500.64x = 35,481,077,371.70
  5. Step 5: Solve for x
    x = 35,481,077,371.70/291,500.64
  6. Step 6: Final answer
    x = 121,718.69

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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.