Home / 100,903.26-139,247.46-55,581.45

Finding the Fourth Proportional to 100,903.26, 139,247.46 and 55,581.45

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Solution

The fourth proportional to 100,903.26, 139,247.46 and 55,581.45 is: 76,702.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,903.26 : 139,247.46 = 55,581.45 : x
  2. Step 2: Convert to fraction form
    100,903.26/139,247.46 = 55,581.45/x
  3. Step 3: Cross multiply
    100,903.26x = 139,247.46 × 55,581.45
  4. Step 4: Simplify right side
    100,903.26x = 7,739,575,735.62
  5. Step 5: Solve for x
    x = 7,739,575,735.62/100,903.26
  6. Step 6: Final answer
    x = 76,702.93

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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.