Home / 112,504.68-155,221.38-74,785.32

Finding the Fourth Proportional to 112,504.68, 155,221.38 and 74,785.32

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Solution

The fourth proportional to 112,504.68, 155,221.38 and 74,785.32 is: 103,180.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,504.68 : 155,221.38 = 74,785.32 : x
  2. Step 2: Convert to fraction form
    112,504.68/155,221.38 = 74,785.32/x
  3. Step 3: Cross multiply
    112,504.68x = 155,221.38 × 74,785.32
  4. Step 4: Simplify right side
    112,504.68x = 11,608,280,574.14
  5. Step 5: Solve for x
    x = 11,608,280,574.14/112,504.68
  6. Step 6: Final answer
    x = 103,180.42

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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.