Home / 156,320.82-215,722.38-84,702.78

Finding the Fourth Proportional to 156,320.82, 215,722.38 and 84,702.78

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Solution

The fourth proportional to 156,320.82, 215,722.38 and 84,702.78 is: 116,889.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,320.82 : 215,722.38 = 84,702.78 : x
  2. Step 2: Convert to fraction form
    156,320.82/215,722.38 = 84,702.78/x
  3. Step 3: Cross multiply
    156,320.82x = 215,722.38 × 84,702.78
  4. Step 4: Simplify right side
    156,320.82x = 18,272,285,294.22
  5. Step 5: Solve for x
    x = 18,272,285,294.22/156,320.82
  6. Step 6: Final answer
    x = 116,889.65

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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.