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Finding the Fourth Proportional to 119,709.60, 165,162.64 and 69,398.56

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Solution

The fourth proportional to 119,709.60, 165,162.64 and 69,398.56 is: 95,748.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,709.60 : 165,162.64 = 69,398.56 : x
  2. Step 2: Convert to fraction form
    119,709.60/165,162.64 = 69,398.56/x
  3. Step 3: Cross multiply
    119,709.60x = 165,162.64 × 69,398.56
  4. Step 4: Simplify right side
    119,709.60x = 11,462,049,381.80
  5. Step 5: Solve for x
    x = 11,462,049,381.80/119,709.60
  6. Step 6: Final answer
    x = 95,748.79

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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.