Home / 156,434.45-215,764.83-102,699.86

Finding the Fourth Proportional to 156,434.45, 215,764.83 and 102,699.86

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Solution

The fourth proportional to 156,434.45, 215,764.83 and 102,699.86 is: 141,650.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,434.45 : 215,764.83 = 102,699.86 : x
  2. Step 2: Convert to fraction form
    156,434.45/215,764.83 = 102,699.86/x
  3. Step 3: Cross multiply
    156,434.45x = 215,764.83 × 102,699.86
  4. Step 4: Simplify right side
    156,434.45x = 22,159,016,755.10
  5. Step 5: Solve for x
    x = 22,159,016,755.10/156,434.45
  6. Step 6: Final answer
    x = 141,650.50

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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.