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Finding the Fourth Proportional to 119,649.69, 165,117.66 and 65,936.63

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Solution

The fourth proportional to 119,649.69, 165,117.66 and 65,936.63 is: 90,993.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,649.69 : 165,117.66 = 65,936.63 : x
  2. Step 2: Convert to fraction form
    119,649.69/165,117.66 = 65,936.63/x
  3. Step 3: Cross multiply
    119,649.69x = 165,117.66 × 65,936.63
  4. Step 4: Simplify right side
    119,649.69x = 10,887,300,898.61
  5. Step 5: Solve for x
    x = 10,887,300,898.61/119,649.69
  6. Step 6: Final answer
    x = 90,993.14

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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.