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Finding the Fourth Proportional to 191,567.82, 287,351.79 and 79,124.46

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Solution

The fourth proportional to 191,567.82, 287,351.79 and 79,124.46 is: 118,686.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,567.82 : 287,351.79 = 79,124.46 : x
  2. Step 2: Convert to fraction form
    191,567.82/287,351.79 = 79,124.46/x
  3. Step 3: Cross multiply
    191,567.82x = 287,351.79 × 79,124.46
  4. Step 4: Simplify right side
    191,567.82x = 22,736,555,213.78
  5. Step 5: Solve for x
    x = 22,736,555,213.78/191,567.82
  6. Step 6: Final answer
    x = 118,686.71

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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.