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Finding the Fourth Proportional to 189,129.83, 260,996.05 and 104,254.79

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Solution

The fourth proportional to 189,129.83, 260,996.05 and 104,254.79 is: 143,869.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,129.83 : 260,996.05 = 104,254.79 : x
  2. Step 2: Convert to fraction form
    189,129.83/260,996.05 = 104,254.79/x
  3. Step 3: Cross multiply
    189,129.83x = 260,996.05 × 104,254.79
  4. Step 4: Simplify right side
    189,129.83x = 27,210,088,383.58
  5. Step 5: Solve for x
    x = 27,210,088,383.58/189,129.83
  6. Step 6: Final answer
    x = 143,869.89

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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.