Home / 154,087.90-231,126.99-91,338.01

Finding the Fourth Proportional to 154,087.90, 231,126.99 and 91,338.01

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Solution

The fourth proportional to 154,087.90, 231,126.99 and 91,338.01 is: 137,004.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,087.90 : 231,126.99 = 91,338.01 : x
  2. Step 2: Convert to fraction form
    154,087.90/231,126.99 = 91,338.01/x
  3. Step 3: Cross multiply
    154,087.90x = 231,126.99 × 91,338.01
  4. Step 4: Simplify right side
    154,087.90x = 21,110,679,323.89
  5. Step 5: Solve for x
    x = 21,110,679,323.89/154,087.90
  6. Step 6: Final answer
    x = 137,004.13

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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.