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Finding the Fourth Proportional to 120,260.94, 165,960.39 and 66,549.63

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Solution

The fourth proportional to 120,260.94, 165,960.39 and 66,549.63 is: 91,838.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,260.94 : 165,960.39 = 66,549.63 : x
  2. Step 2: Convert to fraction form
    120,260.94/165,960.39 = 66,549.63/x
  3. Step 3: Cross multiply
    120,260.94x = 165,960.39 × 66,549.63
  4. Step 4: Simplify right side
    120,260.94x = 11,044,602,549.16
  5. Step 5: Solve for x
    x = 11,044,602,549.16/120,260.94
  6. Step 6: Final answer
    x = 91,838.65

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1.5x scale

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.