Home / 120,086.77-165,728.32-66,370.63

Finding the Fourth Proportional to 120,086.77, 165,728.32 and 66,370.63

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Solution

The fourth proportional to 120,086.77, 165,728.32 and 66,370.63 is: 91,596.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,086.77 : 165,728.32 = 66,370.63 : x
  2. Step 2: Convert to fraction form
    120,086.77/165,728.32 = 66,370.63/x
  3. Step 3: Cross multiply
    120,086.77x = 165,728.32 × 66,370.63
  4. Step 4: Simplify right side
    120,086.77x = 10,999,492,426.99
  5. Step 5: Solve for x
    x = 10,999,492,426.99/120,086.77
  6. Step 6: Final answer
    x = 91,596.21

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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.