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Finding the Fourth Proportional to 112,843.26, 155,722.74 and 61,858.86

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Solution

The fourth proportional to 112,843.26, 155,722.74 and 61,858.86 is: 85,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,843.26 : 155,722.74 = 61,858.86 : x
  2. Step 2: Convert to fraction form
    112,843.26/155,722.74 = 61,858.86/x
  3. Step 3: Cross multiply
    112,843.26x = 155,722.74 × 61,858.86
  4. Step 4: Simplify right side
    112,843.26x = 9,632,831,172.48
  5. Step 5: Solve for x
    x = 9,632,831,172.48/112,843.26
  6. Step 6: Final answer
    x = 85,364.70

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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.