Home / 100,826.75-139,140.92-56,125.31

Finding the Fourth Proportional to 100,826.75, 139,140.92 and 56,125.31

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Solution

The fourth proportional to 100,826.75, 139,140.92 and 56,125.31 is: 77,452.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,826.75 : 139,140.92 = 56,125.31 : x
  2. Step 2: Convert to fraction form
    100,826.75/139,140.92 = 56,125.31/x
  3. Step 3: Cross multiply
    100,826.75x = 139,140.92 × 56,125.31
  4. Step 4: Simplify right side
    100,826.75x = 7,809,327,268.69
  5. Step 5: Solve for x
    x = 7,809,327,268.69/100,826.75
  6. Step 6: Final answer
    x = 77,452.93

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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.