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Finding the Fourth Proportional to 189,056.73, 260,811.18 and 121,041.03

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Solution

The fourth proportional to 189,056.73, 260,811.18 and 121,041.03 is: 166,980.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,056.73 : 260,811.18 = 121,041.03 : x
  2. Step 2: Convert to fraction form
    189,056.73/260,811.18 = 121,041.03/x
  3. Step 3: Cross multiply
    189,056.73x = 260,811.18 × 121,041.03
  4. Step 4: Simplify right side
    189,056.73x = 31,568,853,862.72
  5. Step 5: Solve for x
    x = 31,568,853,862.72/189,056.73
  6. Step 6: Final answer
    x = 166,980.85

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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.