Home / 129,268.58-178,393.26-75,555.86

Finding the Fourth Proportional to 129,268.58, 178,393.26 and 75,555.86

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Solution

The fourth proportional to 129,268.58, 178,393.26 and 75,555.86 is: 104,268.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,268.58 : 178,393.26 = 75,555.86 : x
  2. Step 2: Convert to fraction form
    129,268.58/178,393.26 = 75,555.86/x
  3. Step 3: Cross multiply
    129,268.58x = 178,393.26 × 75,555.86
  4. Step 4: Simplify right side
    129,268.58x = 13,478,656,177.50
  5. Step 5: Solve for x
    x = 13,478,656,177.50/129,268.58
  6. Step 6: Final answer
    x = 104,268.62

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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.