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Finding the Fourth Proportional to 189,071.78, 260,906.72 and 104,188.82

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Solution

The fourth proportional to 189,071.78, 260,906.72 and 104,188.82 is: 143,773.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,071.78 : 260,906.72 = 104,188.82 : x
  2. Step 2: Convert to fraction form
    189,071.78/260,906.72 = 104,188.82/x
  3. Step 3: Cross multiply
    189,071.78x = 260,906.72 × 104,188.82
  4. Step 4: Simplify right side
    189,071.78x = 27,183,561,461.39
  5. Step 5: Solve for x
    x = 27,183,561,461.39/189,071.78
  6. Step 6: Final answer
    x = 143,773.77

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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.