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Finding the Fourth Proportional to 191,494.92, 287,373.60 and 66,835.92

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Solution

The fourth proportional to 191,494.92, 287,373.60 and 66,835.92 is: 100,299.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,494.92 : 287,373.60 = 66,835.92 : x
  2. Step 2: Convert to fraction form
    191,494.92/287,373.60 = 66,835.92/x
  3. Step 3: Cross multiply
    191,494.92x = 287,373.60 × 66,835.92
  4. Step 4: Simplify right side
    191,494.92x = 19,206,878,939.71
  5. Step 5: Solve for x
    x = 19,206,878,939.71/191,494.92
  6. Step 6: Final answer
    x = 100,299.68

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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.