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Finding the Fourth Proportional to 119,361.62, 164,721.68 and 65,649.36

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Solution

The fourth proportional to 119,361.62, 164,721.68 and 65,649.36 is: 90,597.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,361.62 : 164,721.68 = 65,649.36 : x
  2. Step 2: Convert to fraction form
    119,361.62/164,721.68 = 65,649.36/x
  3. Step 3: Cross multiply
    119,361.62x = 164,721.68 × 65,649.36
  4. Step 4: Simplify right side
    119,361.62x = 10,813,872,870.12
  5. Step 5: Solve for x
    x = 10,813,872,870.12/119,361.62
  6. Step 6: Final answer
    x = 90,597.57

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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.