Home / 154,187.21-231,490.64-86,766.88

Finding the Fourth Proportional to 154,187.21, 231,490.64 and 86,766.88

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Solution

The fourth proportional to 154,187.21, 231,490.64 and 86,766.88 is: 130,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,187.21 : 231,490.64 = 86,766.88 : x
  2. Step 2: Convert to fraction form
    154,187.21/231,490.64 = 86,766.88/x
  3. Step 3: Cross multiply
    154,187.21x = 231,490.64 × 86,766.88
  4. Step 4: Simplify right side
    154,187.21x = 20,085,720,582.00
  5. Step 5: Solve for x
    x = 20,085,720,582.00/154,187.21
  6. Step 6: Final answer
    x = 130,268.40

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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.