Home / 100,756.33-139,043.73-55,433.35

Finding the Fourth Proportional to 100,756.33, 139,043.73 and 55,433.35

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Solution

The fourth proportional to 100,756.33, 139,043.73 and 55,433.35 is: 76,498.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,756.33 : 139,043.73 = 55,433.35 : x
  2. Step 2: Convert to fraction form
    100,756.33/139,043.73 = 55,433.35/x
  3. Step 3: Cross multiply
    100,756.33x = 139,043.73 × 55,433.35
  4. Step 4: Simplify right side
    100,756.33x = 7,707,659,750.40
  5. Step 5: Solve for x
    x = 7,707,659,750.40/100,756.33
  6. Step 6: Final answer
    x = 76,498.02

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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.