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Finding the Fourth Proportional to 189,049.64, 260,876.34 and 112,574.39

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Solution

The fourth proportional to 189,049.64, 260,876.34 and 112,574.39 is: 155,345.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,049.64 : 260,876.34 = 112,574.39 : x
  2. Step 2: Convert to fraction form
    189,049.64/260,876.34 = 112,574.39/x
  3. Step 3: Cross multiply
    189,049.64x = 260,876.34 × 112,574.39
  4. Step 4: Simplify right side
    189,049.64x = 29,367,993,536.55
  5. Step 5: Solve for x
    x = 29,367,993,536.55/189,049.64
  6. Step 6: Final answer
    x = 155,345.41

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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.