Home / 154,089.90-231,129.99-91,340.01

Finding the Fourth Proportional to 154,089.90, 231,129.99 and 91,340.01

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Solution

The fourth proportional to 154,089.90, 231,129.99 and 91,340.01 is: 137,007.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,089.90 : 231,129.99 = 91,340.01 : x
  2. Step 2: Convert to fraction form
    154,089.90/231,129.99 = 91,340.01/x
  3. Step 3: Cross multiply
    154,089.90x = 231,129.99 × 91,340.01
  4. Step 4: Simplify right side
    154,089.90x = 21,111,415,597.90
  5. Step 5: Solve for x
    x = 21,111,415,597.90/154,089.90
  6. Step 6: Final answer
    x = 137,007.13

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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.