Home / 103,811.52-142,325.56-101,919.81

Finding the Fourth Proportional to 103,811.52, 142,325.56 and 101,919.81

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Solution

The fourth proportional to 103,811.52, 142,325.56 and 101,919.81 is: 139,732.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,811.52 : 142,325.56 = 101,919.81 : x
  2. Step 2: Convert to fraction form
    103,811.52/142,325.56 = 101,919.81/x
  3. Step 3: Cross multiply
    103,811.52x = 142,325.56 × 101,919.81
  4. Step 4: Simplify right side
    103,811.52x = 14,505,794,033.34
  5. Step 5: Solve for x
    x = 14,505,794,033.34/103,811.52
  6. Step 6: Final answer
    x = 139,732.03

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.