Home / 156,114.70-215,292.06-103,633.85

Finding the Fourth Proportional to 156,114.70, 215,292.06 and 103,633.85

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Solution

The fourth proportional to 156,114.70, 215,292.06 and 103,633.85 is: 142,917.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,114.70 : 215,292.06 = 103,633.85 : x
  2. Step 2: Convert to fraction form
    156,114.70/215,292.06 = 103,633.85/x
  3. Step 3: Cross multiply
    156,114.70x = 215,292.06 × 103,633.85
  4. Step 4: Simplify right side
    156,114.70x = 22,311,545,590.46
  5. Step 5: Solve for x
    x = 22,311,545,590.46/156,114.70
  6. Step 6: Final answer
    x = 142,917.65

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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.