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Finding the Fourth Proportional to 119,670.21, 165,146.04 and 65,957.29

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Solution

The fourth proportional to 119,670.21, 165,146.04 and 65,957.29 is: 91,021.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,670.21 : 165,146.04 = 65,957.29 : x
  2. Step 2: Convert to fraction form
    119,670.21/165,146.04 = 65,957.29/x
  3. Step 3: Cross multiply
    119,670.21x = 165,146.04 × 65,957.29
  4. Step 4: Simplify right side
    119,670.21x = 10,892,584,839.77
  5. Step 5: Solve for x
    x = 10,892,584,839.77/119,670.21
  6. Step 6: Final answer
    x = 91,021.69

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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.