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Finding the Fourth Proportional to 166,355, 229,571.52 and 90,905.12

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Solution

The fourth proportional to 166,355, 229,571.52 and 90,905.12 is: 125,449.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,355 : 229,571.52 = 90,905.12 : x
  2. Step 2: Convert to fraction form
    166,355/229,571.52 = 90,905.12/x
  3. Step 3: Cross multiply
    166,355x = 229,571.52 × 90,905.12
  4. Step 4: Simplify right side
    166,355x = 20,869,226,574.18
  5. Step 5: Solve for x
    x = 20,869,226,574.18/166,355
  6. Step 6: Final answer
    x = 125,449.95

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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.