Home / 156,043.40-215,339.92-84,423.38

Finding the Fourth Proportional to 156,043.40, 215,339.92 and 84,423.38

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Solution

The fourth proportional to 156,043.40, 215,339.92 and 84,423.38 is: 116,504.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,043.40 : 215,339.92 = 84,423.38 : x
  2. Step 2: Convert to fraction form
    156,043.40/215,339.92 = 84,423.38/x
  3. Step 3: Cross multiply
    156,043.40x = 215,339.92 × 84,423.38
  4. Step 4: Simplify right side
    156,043.40x = 18,179,723,895.33
  5. Step 5: Solve for x
    x = 18,179,723,895.33/156,043.40
  6. Step 6: Final answer
    x = 116,504.28

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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.