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Finding the Fourth Proportional to 143,448.60, 214,913.70 and 126,859.80

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Solution

The fourth proportional to 143,448.60, 214,913.70 and 126,859.80 is: 190,060.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,448.60 : 214,913.70 = 126,859.80 : x
  2. Step 2: Convert to fraction form
    143,448.60/214,913.70 = 126,859.80/x
  3. Step 3: Cross multiply
    143,448.60x = 214,913.70 × 126,859.80
  4. Step 4: Simplify right side
    143,448.60x = 27,263,908,999.26
  5. Step 5: Solve for x
    x = 27,263,908,999.26/143,448.60
  6. Step 6: Final answer
    x = 190,060.47

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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.