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Finding the Fourth Proportional to 189,014.60, 260,851.92 and 104,131.64

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Solution

The fourth proportional to 189,014.60, 260,851.92 and 104,131.64 is: 143,708.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,014.60 : 260,851.92 = 104,131.64 : x
  2. Step 2: Convert to fraction form
    189,014.60/260,851.92 = 104,131.64/x
  3. Step 3: Cross multiply
    189,014.60x = 260,851.92 × 104,131.64
  4. Step 4: Simplify right side
    189,014.60x = 27,162,938,226.75
  5. Step 5: Solve for x
    x = 27,162,938,226.75/189,014.60
  6. Step 6: Final answer
    x = 143,708.15

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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.