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Finding the Fourth Proportional to 143,138.07, 214,707.09 and 44,642.07

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Solution

The fourth proportional to 143,138.07, 214,707.09 and 44,642.07 is: 66,963.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,138.07 : 214,707.09 = 44,642.07 : x
  2. Step 2: Convert to fraction form
    143,138.07/214,707.09 = 44,642.07/x
  3. Step 3: Cross multiply
    143,138.07x = 214,707.09 × 44,642.07
  4. Step 4: Simplify right side
    143,138.07x = 9,584,968,941.28
  5. Step 5: Solve for x
    x = 9,584,968,941.28/143,138.07
  6. Step 6: Final answer
    x = 66,963.10

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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.