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Finding the Fourth Proportional to 191,446.48, 286,979.46 and 91,489.96

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Solution

The fourth proportional to 191,446.48, 286,979.46 and 91,489.96 is: 137,144.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,446.48 : 286,979.46 = 91,489.96 : x
  2. Step 2: Convert to fraction form
    191,446.48/286,979.46 = 91,489.96/x
  3. Step 3: Cross multiply
    191,446.48x = 286,979.46 × 91,489.96
  4. Step 4: Simplify right side
    191,446.48x = 26,255,739,316.22
  5. Step 5: Solve for x
    x = 26,255,739,316.22/191,446.48
  6. Step 6: Final answer
    x = 137,144.02

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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.