Home / 124,448,009.20-186,672,013.80-81,449,839.60

Finding the Fourth Proportional to 124,448,009.20, 186,672,013.80 and 81,449,839.60

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Solution

The fourth proportional to 124,448,009.20, 186,672,013.80 and 81,449,839.60 is: 122,174,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,448,009.20 : 186,672,013.80 = 81,449,839.60 : x
  2. Step 2: Convert to fraction form
    124,448,009.20/186,672,013.80 = 81,449,839.60/x
  3. Step 3: Cross multiply
    124,448,009.20x = 186,672,013.80 × 81,449,839.60
  4. Step 4: Simplify right side
    124,448,009.20x = 15,204,405,581,818,986
  5. Step 5: Solve for x
    x = 15,204,405,581,818,986/124,448,009.20
  6. Step 6: Final answer
    x = 122,174,759.40

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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.