Home / 100,950.20-139,317.48-55,628.16

Finding the Fourth Proportional to 100,950.20, 139,317.48 and 55,628.16

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Solution

The fourth proportional to 100,950.20, 139,317.48 and 55,628.16 is: 76,770.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,950.20 : 139,317.48 = 55,628.16 : x
  2. Step 2: Convert to fraction form
    100,950.20/139,317.48 = 55,628.16/x
  3. Step 3: Cross multiply
    100,950.20x = 139,317.48 × 55,628.16
  4. Step 4: Simplify right side
    100,950.20x = 7,749,974,790.10
  5. Step 5: Solve for x
    x = 7,749,974,790.10/100,950.20
  6. Step 6: Final answer
    x = 76,770.28

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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.