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Finding the Fourth Proportional to 101,520.12, 140,101.50 and 55,582.98

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Solution

The fourth proportional to 101,520.12, 140,101.50 and 55,582.98 is: 76,706.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,520.12 : 140,101.50 = 55,582.98 : x
  2. Step 2: Convert to fraction form
    101,520.12/140,101.50 = 55,582.98/x
  3. Step 3: Cross multiply
    101,520.12x = 140,101.50 × 55,582.98
  4. Step 4: Simplify right side
    101,520.12x = 7,787,258,872.47
  5. Step 5: Solve for x
    x = 7,787,258,872.47/101,520.12
  6. Step 6: Final answer
    x = 76,706.56

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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.