Home / 103,728.10-155,203.35-68,736.10

Finding the Fourth Proportional to 103,728.10, 155,203.35 and 68,736.10

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Solution

The fourth proportional to 103,728.10, 155,203.35 and 68,736.10 is: 102,846.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,728.10 : 155,203.35 = 68,736.10 : x
  2. Step 2: Convert to fraction form
    103,728.10/155,203.35 = 68,736.10/x
  3. Step 3: Cross multiply
    103,728.10x = 155,203.35 × 68,736.10
  4. Step 4: Simplify right side
    103,728.10x = 10,668,072,985.94
  5. Step 5: Solve for x
    x = 10,668,072,985.94/103,728.10
  6. Step 6: Final answer
    x = 102,846.51

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1.5x scale

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.