Home / 103,738.64-142,987.22-73,485.14

Finding the Fourth Proportional to 103,738.64, 142,987.22 and 73,485.14

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Solution

The fourth proportional to 103,738.64, 142,987.22 and 73,485.14 is: 101,287.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,738.64 : 142,987.22 = 73,485.14 : x
  2. Step 2: Convert to fraction form
    103,738.64/142,987.22 = 73,485.14/x
  3. Step 3: Cross multiply
    103,738.64x = 142,987.22 × 73,485.14
  4. Step 4: Simplify right side
    103,738.64x = 10,507,434,797.55
  5. Step 5: Solve for x
    x = 10,507,434,797.55/103,738.64
  6. Step 6: Final answer
    x = 101,287.58

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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.