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Finding the Fourth Proportional to 143,139.07, 214,708.59 and 44,643.07

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Solution

The fourth proportional to 143,139.07, 214,708.59 and 44,643.07 is: 66,964.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,139.07 : 214,708.59 = 44,643.07 : x
  2. Step 2: Convert to fraction form
    143,139.07/214,708.59 = 44,643.07/x
  3. Step 3: Cross multiply
    143,139.07x = 214,708.59 × 44,643.07
  4. Step 4: Simplify right side
    143,139.07x = 9,585,250,612.97
  5. Step 5: Solve for x
    x = 9,585,250,612.97/143,139.07
  6. Step 6: Final answer
    x = 66,964.60

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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.