Home / 156,299.80-215,785.74-102,678.34

Finding the Fourth Proportional to 156,299.80, 215,785.74 and 102,678.34

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Solution

The fourth proportional to 156,299.80, 215,785.74 and 102,678.34 is: 141,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,299.80 : 215,785.74 = 102,678.34 : x
  2. Step 2: Convert to fraction form
    156,299.80/215,785.74 = 102,678.34/x
  3. Step 3: Cross multiply
    156,299.80x = 215,785.74 × 102,678.34
  4. Step 4: Simplify right side
    156,299.80x = 22,156,521,578.87
  5. Step 5: Solve for x
    x = 22,156,521,578.87/156,299.80
  6. Step 6: Final answer
    x = 141,756.56

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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.