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Finding the Fourth Proportional to 119,741.17, 165,239.65 and 66,025.28

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Solution

The fourth proportional to 119,741.17, 165,239.65 and 66,025.28 is: 91,113.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,741.17 : 165,239.65 = 66,025.28 : x
  2. Step 2: Convert to fraction form
    119,741.17/165,239.65 = 66,025.28/x
  3. Step 3: Cross multiply
    119,741.17x = 165,239.65 × 66,025.28
  4. Step 4: Simplify right side
    119,741.17x = 10,909,994,158.35
  5. Step 5: Solve for x
    x = 10,909,994,158.35/119,741.17
  6. Step 6: Final answer
    x = 91,113.14

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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.