Home / 156,915.43-216,540.73-85,297.25

Finding the Fourth Proportional to 156,915.43, 216,540.73 and 85,297.25

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Solution

The fourth proportional to 156,915.43, 216,540.73 and 85,297.25 is: 117,708.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,915.43 : 216,540.73 = 85,297.25 : x
  2. Step 2: Convert to fraction form
    156,915.43/216,540.73 = 85,297.25/x
  3. Step 3: Cross multiply
    156,915.43x = 216,540.73 × 85,297.25
  4. Step 4: Simplify right side
    156,915.43x = 18,470,328,781.99
  5. Step 5: Solve for x
    x = 18,470,328,781.99/156,915.43
  6. Step 6: Final answer
    x = 117,708.81

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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.