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Finding the Fourth Proportional to 119,359.64, 164,713 and 65,644.64

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Solution

The fourth proportional to 119,359.64, 164,713 and 65,644.64 is: 90,587.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,359.64 : 164,713 = 65,644.64 : x
  2. Step 2: Convert to fraction form
    119,359.64/164,713 = 65,644.64/x
  3. Step 3: Cross multiply
    119,359.64x = 164,713 × 65,644.64
  4. Step 4: Simplify right side
    119,359.64x = 10,812,525,588.32
  5. Step 5: Solve for x
    x = 10,812,525,588.32/119,359.64
  6. Step 6: Final answer
    x = 90,587.79

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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.