Home / 134,129.28-185,102.40-74,512

Finding the Fourth Proportional to 134,129.28, 185,102.40 and 74,512

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Solution

The fourth proportional to 134,129.28, 185,102.40 and 74,512 is: 102,828.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,129.28 : 185,102.40 = 74,512 : x
  2. Step 2: Convert to fraction form
    134,129.28/185,102.40 = 74,512/x
  3. Step 3: Cross multiply
    134,129.28x = 185,102.40 × 74,512
  4. Step 4: Simplify right side
    134,129.28x = 13,792,350,028.80
  5. Step 5: Solve for x
    x = 13,792,350,028.80/134,129.28
  6. Step 6: Final answer
    x = 102,828.78

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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.