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Finding the Fourth Proportional to 103,076.76, 154,518.16 and 55,620.73

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Solution

The fourth proportional to 103,076.76, 154,518.16 and 55,620.73 is: 83,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,076.76 : 154,518.16 = 55,620.73 : x
  2. Step 2: Convert to fraction form
    103,076.76/154,518.16 = 55,620.73/x
  3. Step 3: Cross multiply
    103,076.76x = 154,518.16 × 55,620.73
  4. Step 4: Simplify right side
    103,076.76x = 8,594,412,857.46
  5. Step 5: Solve for x
    x = 8,594,412,857.46/103,076.76
  6. Step 6: Final answer
    x = 83,378.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.