Home / 112,321.21-155,003.81-61,334.98

Finding the Fourth Proportional to 112,321.21, 155,003.81 and 61,334.98

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Solution

The fourth proportional to 112,321.21, 155,003.81 and 61,334.98 is: 84,642.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,321.21 : 155,003.81 = 61,334.98 : x
  2. Step 2: Convert to fraction form
    112,321.21/155,003.81 = 61,334.98/x
  3. Step 3: Cross multiply
    112,321.21x = 155,003.81 × 61,334.98
  4. Step 4: Simplify right side
    112,321.21x = 9,507,155,586.27
  5. Step 5: Solve for x
    x = 9,507,155,586.27/112,321.21
  6. Step 6: Final answer
    x = 84,642.57

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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.