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Finding the Fourth Proportional to 191,569.82, 287,354.79 and 79,126.46

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Solution

The fourth proportional to 191,569.82, 287,354.79 and 79,126.46 is: 118,689.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,569.82 : 287,354.79 = 79,126.46 : x
  2. Step 2: Convert to fraction form
    191,569.82/287,354.79 = 79,126.46/x
  3. Step 3: Cross multiply
    191,569.82x = 287,354.79 × 79,126.46
  4. Step 4: Simplify right side
    191,569.82x = 22,737,367,296.74
  5. Step 5: Solve for x
    x = 22,737,367,296.74/191,569.82
  6. Step 6: Final answer
    x = 118,689.71

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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.