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Finding the Fourth Proportional to 103,366.53, 154,905.21 and 55,879.07

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Solution

The fourth proportional to 103,366.53, 154,905.21 and 55,879.07 is: 83,740.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,366.53 : 154,905.21 = 55,879.07 : x
  2. Step 2: Convert to fraction form
    103,366.53/154,905.21 = 55,879.07/x
  3. Step 3: Cross multiply
    103,366.53x = 154,905.21 × 55,879.07
  4. Step 4: Simplify right side
    103,366.53x = 8,655,958,298.43
  5. Step 5: Solve for x
    x = 8,655,958,298.43/103,366.53
  6. Step 6: Final answer
    x = 83,740.44

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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.