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Finding the Fourth Proportional to 191,339.68, 286,823.44 and 91,474

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Solution

The fourth proportional to 191,339.68, 286,823.44 and 91,474 is: 137,122.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,339.68 : 286,823.44 = 91,474 : x
  2. Step 2: Convert to fraction form
    191,339.68/286,823.44 = 91,474/x
  3. Step 3: Cross multiply
    191,339.68x = 286,823.44 × 91,474
  4. Step 4: Simplify right side
    191,339.68x = 26,236,887,350.56
  5. Step 5: Solve for x
    x = 26,236,887,350.56/191,339.68
  6. Step 6: Final answer
    x = 137,122.04

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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.