Home / 130,891.60-196,337.40-121,268.80

Finding the Fourth Proportional to 130,891.60, 196,337.40 and 121,268.80

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Solution

The fourth proportional to 130,891.60, 196,337.40 and 121,268.80 is: 181,903.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,891.60 : 196,337.40 = 121,268.80 : x
  2. Step 2: Convert to fraction form
    130,891.60/196,337.40 = 121,268.80/x
  3. Step 3: Cross multiply
    130,891.60x = 196,337.40 × 121,268.80
  4. Step 4: Simplify right side
    130,891.60x = 23,809,600,893.12
  5. Step 5: Solve for x
    x = 23,809,600,893.12/130,891.60
  6. Step 6: Final answer
    x = 181,903.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.