Home / 105,052.88-145,131.07-68,840.38

Finding the Fourth Proportional to 105,052.88, 145,131.07 and 68,840.38

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Solution

The fourth proportional to 105,052.88, 145,131.07 and 68,840.38 is: 95,103.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,052.88 : 145,131.07 = 68,840.38 : x
  2. Step 2: Convert to fraction form
    105,052.88/145,131.07 = 68,840.38/x
  3. Step 3: Cross multiply
    105,052.88x = 145,131.07 × 68,840.38
  4. Step 4: Simplify right side
    105,052.88x = 9,990,877,953.38
  5. Step 5: Solve for x
    x = 9,990,877,953.38/105,052.88
  6. Step 6: Final answer
    x = 95,103.32

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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.