Home / 103,945.46-143,349.09-68,122.46

Finding the Fourth Proportional to 103,945.46, 143,349.09 and 68,122.46

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Solution

The fourth proportional to 103,945.46, 143,349.09 and 68,122.46 is: 93,946.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,945.46 : 143,349.09 = 68,122.46 : x
  2. Step 2: Convert to fraction form
    103,945.46/143,349.09 = 68,122.46/x
  3. Step 3: Cross multiply
    103,945.46x = 143,349.09 × 68,122.46
  4. Step 4: Simplify right side
    103,945.46x = 9,765,292,649.56
  5. Step 5: Solve for x
    x = 9,765,292,649.56/103,945.46
  6. Step 6: Final answer
    x = 93,946.31

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1.5x scale

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.