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Finding the Fourth Proportional to 120,489.84, 180,755.40 and 41,585.56

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Solution

The fourth proportional to 120,489.84, 180,755.40 and 41,585.56 is: 62,385.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,489.84 : 180,755.40 = 41,585.56 : x
  2. Step 2: Convert to fraction form
    120,489.84/180,755.40 = 41,585.56/x
  3. Step 3: Cross multiply
    120,489.84x = 180,755.40 × 41,585.56
  4. Step 4: Simplify right side
    120,489.84x = 7,516,814,532.02
  5. Step 5: Solve for x
    x = 7,516,814,532.02/120,489.84
  6. Step 6: Final answer
    x = 62,385.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.