Home / 142,930.86-197,245.17-79,274.58

Finding the Fourth Proportional to 142,930.86, 197,245.17 and 79,274.58

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Solution

The fourth proportional to 142,930.86, 197,245.17 and 79,274.58 is: 109,399.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,930.86 : 197,245.17 = 79,274.58 : x
  2. Step 2: Convert to fraction form
    142,930.86/197,245.17 = 79,274.58/x
  3. Step 3: Cross multiply
    142,930.86x = 197,245.17 × 79,274.58
  4. Step 4: Simplify right side
    142,930.86x = 15,636,528,008.78
  5. Step 5: Solve for x
    x = 15,636,528,008.78/142,930.86
  6. Step 6: Final answer
    x = 109,399.24

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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.