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Finding the Fourth Proportional to 154,692.24, 213,468.72 and 87,624.24

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Solution

The fourth proportional to 154,692.24, 213,468.72 and 87,624.24 is: 120,917.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,692.24 : 213,468.72 = 87,624.24 : x
  2. Step 2: Convert to fraction form
    154,692.24/213,468.72 = 87,624.24/x
  3. Step 3: Cross multiply
    154,692.24x = 213,468.72 × 87,624.24
  4. Step 4: Simplify right side
    154,692.24x = 18,705,034,353.77
  5. Step 5: Solve for x
    x = 18,705,034,353.77/154,692.24
  6. Step 6: Final answer
    x = 120,917.73

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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.