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Finding the Fourth Proportional to 119,670.10, 165,138 and 65,954.94

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Solution

The fourth proportional to 119,670.10, 165,138 and 65,954.94 is: 91,014.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,670.10 : 165,138 = 65,954.94 : x
  2. Step 2: Convert to fraction form
    119,670.10/165,138 = 65,954.94/x
  3. Step 3: Cross multiply
    119,670.10x = 165,138 × 65,954.94
  4. Step 4: Simplify right side
    119,670.10x = 10,891,666,881.72
  5. Step 5: Solve for x
    x = 10,891,666,881.72/119,670.10
  6. Step 6: Final answer
    x = 91,014.10

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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.