Home / 254,639.54-381,949.59-86,172.50

Finding the Fourth Proportional to 254,639.54, 381,949.59 and 86,172.50

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Solution

The fourth proportional to 254,639.54, 381,949.59 and 86,172.50 is: 129,255.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,639.54 : 381,949.59 = 86,172.50 : x
  2. Step 2: Convert to fraction form
    254,639.54/381,949.59 = 86,172.50/x
  3. Step 3: Cross multiply
    254,639.54x = 381,949.59 × 86,172.50
  4. Step 4: Simplify right side
    254,639.54x = 32,913,551,044.28
  5. Step 5: Solve for x
    x = 32,913,551,044.28/254,639.54
  6. Step 6: Final answer
    x = 129,255.46

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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.