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Finding the Fourth Proportional to 189,120.32, 283,766.60 and 70,800.88

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Solution

The fourth proportional to 189,120.32, 283,766.60 and 70,800.88 is: 106,233.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,120.32 : 283,766.60 = 70,800.88 : x
  2. Step 2: Convert to fraction form
    189,120.32/283,766.60 = 70,800.88/x
  3. Step 3: Cross multiply
    189,120.32x = 283,766.60 × 70,800.88
  4. Step 4: Simplify right side
    189,120.32x = 20,090,924,994.61
  5. Step 5: Solve for x
    x = 20,090,924,994.61/189,120.32
  6. Step 6: Final answer
    x = 106,233.56

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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.