Home / 142,913.76-197,219.88-79,251.72

Finding the Fourth Proportional to 142,913.76, 197,219.88 and 79,251.72

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Solution

The fourth proportional to 142,913.76, 197,219.88 and 79,251.72 is: 109,366.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,913.76 : 197,219.88 = 79,251.72 : x
  2. Step 2: Convert to fraction form
    142,913.76/197,219.88 = 79,251.72/x
  3. Step 3: Cross multiply
    142,913.76x = 197,219.88 × 79,251.72
  4. Step 4: Simplify right side
    142,913.76x = 15,630,014,708.19
  5. Step 5: Solve for x
    x = 15,630,014,708.19/142,913.76
  6. Step 6: Final answer
    x = 109,366.76

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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.