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Finding the Fourth Proportional to 189,070.52, 260,905.56 and 108,504.68

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Solution

The fourth proportional to 189,070.52, 260,905.56 and 108,504.68 is: 149,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,070.52 : 260,905.56 = 108,504.68 : x
  2. Step 2: Convert to fraction form
    189,070.52/260,905.56 = 108,504.68/x
  3. Step 3: Cross multiply
    189,070.52x = 260,905.56 × 108,504.68
  4. Step 4: Simplify right side
    189,070.52x = 28,309,474,298.02
  5. Step 5: Solve for x
    x = 28,309,474,298.02/189,070.52
  6. Step 6: Final answer
    x = 149,729.71

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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.