Home / 100,790.66-139,096.86-57,777.32

Finding the Fourth Proportional to 100,790.66, 139,096.86 and 57,777.32

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Solution

The fourth proportional to 100,790.66, 139,096.86 and 57,777.32 is: 79,736.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,790.66 : 139,096.86 = 57,777.32 : x
  2. Step 2: Convert to fraction form
    100,790.66/139,096.86 = 57,777.32/x
  3. Step 3: Cross multiply
    100,790.66x = 139,096.86 × 57,777.32
  4. Step 4: Simplify right side
    100,790.66x = 8,036,643,791.22
  5. Step 5: Solve for x
    x = 8,036,643,791.22/100,790.66
  6. Step 6: Final answer
    x = 79,736.00

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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.