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Finding the Fourth Proportional to 191,291.68, 286,814.44 and 91,449.64

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Solution

The fourth proportional to 191,291.68, 286,814.44 and 91,449.64 is: 137,115.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,291.68 : 286,814.44 = 91,449.64 : x
  2. Step 2: Convert to fraction form
    191,291.68/286,814.44 = 91,449.64/x
  3. Step 3: Cross multiply
    191,291.68x = 286,814.44 × 91,449.64
  4. Step 4: Simplify right side
    191,291.68x = 26,229,077,284.80
  5. Step 5: Solve for x
    x = 26,229,077,284.80/191,291.68
  6. Step 6: Final answer
    x = 137,115.62

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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.