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Finding the Fourth Proportional to 191,359.92, 264,067.68 and 105,316.08

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Solution

The fourth proportional to 191,359.92, 264,067.68 and 105,316.08 is: 145,331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,359.92 : 264,067.68 = 105,316.08 : x
  2. Step 2: Convert to fraction form
    191,359.92/264,067.68 = 105,316.08/x
  3. Step 3: Cross multiply
    191,359.92x = 264,067.68 × 105,316.08
  4. Step 4: Simplify right side
    191,359.92x = 27,810,572,912.29
  5. Step 5: Solve for x
    x = 27,810,572,912.29/191,359.92
  6. Step 6: Final answer
    x = 145,331.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.