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Finding the Fourth Proportional to 189,086.80, 260,952.70 and 115,530.73

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Solution

The fourth proportional to 189,086.80, 260,952.70 and 115,530.73 is: 159,440.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,086.80 : 260,952.70 = 115,530.73 : x
  2. Step 2: Convert to fraction form
    189,086.80/260,952.70 = 115,530.73/x
  3. Step 3: Cross multiply
    189,086.80x = 260,952.70 × 115,530.73
  4. Step 4: Simplify right side
    189,086.80x = 30,148,054,332.88
  5. Step 5: Solve for x
    x = 30,148,054,332.88/189,086.80
  6. Step 6: Final answer
    x = 159,440.29

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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.