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Finding the Fourth Proportional to 162,405.56, 224,120.57 and 90,788.60

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Solution

The fourth proportional to 162,405.56, 224,120.57 and 90,788.60 is: 125,288.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,405.56 : 224,120.57 = 90,788.60 : x
  2. Step 2: Convert to fraction form
    162,405.56/224,120.57 = 90,788.60/x
  3. Step 3: Cross multiply
    162,405.56x = 224,120.57 × 90,788.60
  4. Step 4: Simplify right side
    162,405.56x = 20,347,591,206.96
  5. Step 5: Solve for x
    x = 20,347,591,206.96/162,405.56
  6. Step 6: Final answer
    x = 125,288.76

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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.