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Finding the Fourth Proportional to 119,970, 165,558.60 and 69,672.24

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Solution

The fourth proportional to 119,970, 165,558.60 and 69,672.24 is: 96,147.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,970 : 165,558.60 = 69,672.24 : x
  2. Step 2: Convert to fraction form
    119,970/165,558.60 = 69,672.24/x
  3. Step 3: Cross multiply
    119,970x = 165,558.60 × 69,672.24
  4. Step 4: Simplify right side
    119,970x = 11,534,838,513.26
  5. Step 5: Solve for x
    x = 11,534,838,513.26/119,970
  6. Step 6: Final answer
    x = 96,147.69

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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.