Home / 142,892.91-197,194.23-78,367.77

Finding the Fourth Proportional to 142,892.91, 197,194.23 and 78,367.77

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Solution

The fourth proportional to 142,892.91, 197,194.23 and 78,367.77 is: 108,148.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,892.91 : 197,194.23 = 78,367.77 : x
  2. Step 2: Convert to fraction form
    142,892.91/197,194.23 = 78,367.77/x
  3. Step 3: Cross multiply
    142,892.91x = 197,194.23 × 78,367.77
  4. Step 4: Simplify right side
    142,892.91x = 15,453,672,061.97
  5. Step 5: Solve for x
    x = 15,453,672,061.97/142,892.91
  6. Step 6: Final answer
    x = 108,148.63

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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.