Home / 103,621.17-155,431.74-68,552.64

Finding the Fourth Proportional to 103,621.17, 155,431.74 and 68,552.64

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Solution

The fourth proportional to 103,621.17, 155,431.74 and 68,552.64 is: 102,828.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.17 : 155,431.74 = 68,552.64 : x
  2. Step 2: Convert to fraction form
    103,621.17/155,431.74 = 68,552.64/x
  3. Step 3: Cross multiply
    103,621.17x = 155,431.74 × 68,552.64
  4. Step 4: Simplify right side
    103,621.17x = 10,655,256,116.79
  5. Step 5: Solve for x
    x = 10,655,256,116.79/103,621.17
  6. Step 6: Final answer
    x = 102,828.95

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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.