Home / 104,403.21-144,005.09-66,660.45

Finding the Fourth Proportional to 104,403.21, 144,005.09 and 66,660.45

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Solution

The fourth proportional to 104,403.21, 144,005.09 and 66,660.45 is: 91,945.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,403.21 : 144,005.09 = 66,660.45 : x
  2. Step 2: Convert to fraction form
    104,403.21/144,005.09 = 66,660.45/x
  3. Step 3: Cross multiply
    104,403.21x = 144,005.09 × 66,660.45
  4. Step 4: Simplify right side
    104,403.21x = 9,599,443,768.39
  5. Step 5: Solve for x
    x = 9,599,443,768.39/104,403.21
  6. Step 6: Final answer
    x = 91,945.87

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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.