Home / 240,129.24-331,404-138,159.16

Finding the Fourth Proportional to 240,129.24, 331,404 and 138,159.16

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Solution

The fourth proportional to 240,129.24, 331,404 and 138,159.16 is: 190,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,129.24 : 331,404 = 138,159.16 : x
  2. Step 2: Convert to fraction form
    240,129.24/331,404 = 138,159.16/x
  3. Step 3: Cross multiply
    240,129.24x = 331,404 × 138,159.16
  4. Step 4: Simplify right side
    240,129.24x = 45,786,498,260.64
  5. Step 5: Solve for x
    x = 45,786,498,260.64/240,129.24
  6. Step 6: Final answer
    x = 190,674.40

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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.