Home / 115,457.40-159,441.25-109,167.39

Finding the Fourth Proportional to 115,457.40, 159,441.25 and 109,167.39

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Solution

The fourth proportional to 115,457.40, 159,441.25 and 109,167.39 is: 150,755.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,457.40 : 159,441.25 = 109,167.39 : x
  2. Step 2: Convert to fraction form
    115,457.40/159,441.25 = 109,167.39/x
  3. Step 3: Cross multiply
    115,457.40x = 159,441.25 × 109,167.39
  4. Step 4: Simplify right side
    115,457.40x = 17,405,784,323.63
  5. Step 5: Solve for x
    x = 17,405,784,323.63/115,457.40
  6. Step 6: Final answer
    x = 150,755.03

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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.