Home / 91,238.05-125,845.14-83,709.30

Finding the Fourth Proportional to 91,238.05, 125,845.14 and 83,709.30

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Solution

The fourth proportional to 91,238.05, 125,845.14 and 83,709.30 is: 115,460.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,238.05 : 125,845.14 = 83,709.30 : x
  2. Step 2: Convert to fraction form
    91,238.05/125,845.14 = 83,709.30/x
  3. Step 3: Cross multiply
    91,238.05x = 125,845.14 × 83,709.30
  4. Step 4: Simplify right side
    91,238.05x = 10,534,408,577.80
  5. Step 5: Solve for x
    x = 10,534,408,577.80/91,238.05
  6. Step 6: Final answer
    x = 115,460.69

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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.