Home / 154,090.90-231,131.49-91,341.01

Finding the Fourth Proportional to 154,090.90, 231,131.49 and 91,341.01

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Solution

The fourth proportional to 154,090.90, 231,131.49 and 91,341.01 is: 137,008.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,090.90 : 231,131.49 = 91,341.01 : x
  2. Step 2: Convert to fraction form
    154,090.90/231,131.49 = 91,341.01/x
  3. Step 3: Cross multiply
    154,090.90x = 231,131.49 × 91,341.01
  4. Step 4: Simplify right side
    154,090.90x = 21,111,783,739.40
  5. Step 5: Solve for x
    x = 21,111,783,739.40/154,090.90
  6. Step 6: Final answer
    x = 137,008.63

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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.