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Finding the Fourth Proportional to 189,445.46, 261,416.11 and 104,557.05

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Solution

The fourth proportional to 189,445.46, 261,416.11 and 104,557.05 is: 144,278.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,445.46 : 261,416.11 = 104,557.05 : x
  2. Step 2: Convert to fraction form
    189,445.46/261,416.11 = 104,557.05/x
  3. Step 3: Cross multiply
    189,445.46x = 261,416.11 × 104,557.05
  4. Step 4: Simplify right side
    189,445.46x = 27,332,897,284.08
  5. Step 5: Solve for x
    x = 27,332,897,284.08/189,445.46
  6. Step 6: Final answer
    x = 144,278.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.