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Finding the Fourth Proportional to 142,752.67, 196,990.46 and 79,086.67

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Solution

The fourth proportional to 142,752.67, 196,990.46 and 79,086.67 is: 109,135.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,752.67 : 196,990.46 = 79,086.67 : x
  2. Step 2: Convert to fraction form
    142,752.67/196,990.46 = 79,086.67/x
  3. Step 3: Cross multiply
    142,752.67x = 196,990.46 × 79,086.67
  4. Step 4: Simplify right side
    142,752.67x = 15,579,319,107.73
  5. Step 5: Solve for x
    x = 15,579,319,107.73/142,752.67
  6. Step 6: Final answer
    x = 109,135.05

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1.5x scale

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.