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Finding the Fourth Proportional to 112,906.77, 155,818.24 and 65,163.20

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Solution

The fourth proportional to 112,906.77, 155,818.24 and 65,163.20 is: 89,929.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,906.77 : 155,818.24 = 65,163.20 : x
  2. Step 2: Convert to fraction form
    112,906.77/155,818.24 = 65,163.20/x
  3. Step 3: Cross multiply
    112,906.77x = 155,818.24 × 65,163.20
  4. Step 4: Simplify right side
    112,906.77x = 10,153,614,194.77
  5. Step 5: Solve for x
    x = 10,153,614,194.77/112,906.77
  6. Step 6: Final answer
    x = 89,929.19

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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.