Home / 125,264-172,955.04-80,629.76

Finding the Fourth Proportional to 125,264, 172,955.04 and 80,629.76

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Solution

The fourth proportional to 125,264, 172,955.04 and 80,629.76 is: 111,327.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,264 : 172,955.04 = 80,629.76 : x
  2. Step 2: Convert to fraction form
    125,264/172,955.04 = 80,629.76/x
  3. Step 3: Cross multiply
    125,264x = 172,955.04 × 80,629.76
  4. Step 4: Simplify right side
    125,264x = 13,945,323,365.99
  5. Step 5: Solve for x
    x = 13,945,323,365.99/125,264
  6. Step 6: Final answer
    x = 111,327.46

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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.