Home / 101,161.12-139,611.60-55,847.20

Finding the Fourth Proportional to 101,161.12, 139,611.60 and 55,847.20

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Solution

The fourth proportional to 101,161.12, 139,611.60 and 55,847.20 is: 77,074.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,161.12 : 139,611.60 = 55,847.20 : x
  2. Step 2: Convert to fraction form
    101,161.12/139,611.60 = 55,847.20/x
  3. Step 3: Cross multiply
    101,161.12x = 139,611.60 × 55,847.20
  4. Step 4: Simplify right side
    101,161.12x = 7,796,916,947.52
  5. Step 5: Solve for x
    x = 7,796,916,947.52/101,161.12
  6. Step 6: Final answer
    x = 77,074.25

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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.