Home / 103,143.44-142,229.84-76,342.16

Finding the Fourth Proportional to 103,143.44, 142,229.84 and 76,342.16

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Solution

The fourth proportional to 103,143.44, 142,229.84 and 76,342.16 is: 105,272.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,143.44 : 142,229.84 = 76,342.16 : x
  2. Step 2: Convert to fraction form
    103,143.44/142,229.84 = 76,342.16/x
  3. Step 3: Cross multiply
    103,143.44x = 142,229.84 × 76,342.16
  4. Step 4: Simplify right side
    103,143.44x = 10,858,133,202.05
  5. Step 5: Solve for x
    x = 10,858,133,202.05/103,143.44
  6. Step 6: Final answer
    x = 105,272.16

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1.5x scale

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.