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Finding the Fourth Proportional to 191,494.56, 287,373.08 and 66,835.56

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Solution

The fourth proportional to 191,494.56, 287,373.08 and 66,835.56 is: 100,299.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,494.56 : 287,373.08 = 66,835.56 : x
  2. Step 2: Convert to fraction form
    191,494.56/287,373.08 = 66,835.56/x
  3. Step 3: Cross multiply
    191,494.56x = 287,373.08 × 66,835.56
  4. Step 4: Simplify right side
    191,494.56x = 19,206,740,730.72
  5. Step 5: Solve for x
    x = 19,206,740,730.72/191,494.56
  6. Step 6: Final answer
    x = 100,299.15

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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.