Home / 135,431.20-186,926.16-90,111.09

Finding the Fourth Proportional to 135,431.20, 186,926.16 and 90,111.09

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Solution

The fourth proportional to 135,431.20, 186,926.16 and 90,111.09 is: 124,374.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,431.20 : 186,926.16 = 90,111.09 : x
  2. Step 2: Convert to fraction form
    135,431.20/186,926.16 = 90,111.09/x
  3. Step 3: Cross multiply
    135,431.20x = 186,926.16 × 90,111.09
  4. Step 4: Simplify right side
    135,431.20x = 16,844,121,066.00
  5. Step 5: Solve for x
    x = 16,844,121,066.00/135,431.20
  6. Step 6: Final answer
    x = 124,374.01

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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.