Home / 122,725.28-168,321.64-121,271.20

Finding the Fourth Proportional to 122,725.28, 168,321.64 and 121,271.20

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Solution

The fourth proportional to 122,725.28, 168,321.64 and 121,271.20 is: 166,327.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,725.28 : 168,321.64 = 121,271.20 : x
  2. Step 2: Convert to fraction form
    122,725.28/168,321.64 = 121,271.20/x
  3. Step 3: Cross multiply
    122,725.28x = 168,321.64 × 121,271.20
  4. Step 4: Simplify right side
    122,725.28x = 20,412,567,268.77
  5. Step 5: Solve for x
    x = 20,412,567,268.77/122,725.28
  6. Step 6: Final answer
    x = 166,327.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.