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Finding the Fourth Proportional to 119,739.87, 165,237.42 and 66,024.87

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Solution

The fourth proportional to 119,739.87, 165,237.42 and 66,024.87 is: 91,112.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,739.87 : 165,237.42 = 66,024.87 : x
  2. Step 2: Convert to fraction form
    119,739.87/165,237.42 = 66,024.87/x
  3. Step 3: Cross multiply
    119,739.87x = 165,237.42 × 66,024.87
  4. Step 4: Simplify right side
    119,739.87x = 10,909,779,174.64
  5. Step 5: Solve for x
    x = 10,909,779,174.64/119,739.87
  6. Step 6: Final answer
    x = 91,112.34

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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.