Home / 156,632.77-216,153.42-85,012.81

Finding the Fourth Proportional to 156,632.77, 216,153.42 and 85,012.81

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Solution

The fourth proportional to 156,632.77, 216,153.42 and 85,012.81 is: 117,317.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,632.77 : 216,153.42 = 85,012.81 : x
  2. Step 2: Convert to fraction form
    156,632.77/216,153.42 = 85,012.81/x
  3. Step 3: Cross multiply
    156,632.77x = 216,153.42 × 85,012.81
  4. Step 4: Simplify right side
    156,632.77x = 18,375,809,625.31
  5. Step 5: Solve for x
    x = 18,375,809,625.31/156,632.77
  6. Step 6: Final answer
    x = 117,317.78

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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.