Home / 81,179.55-121,706.44-56,147.21

Finding the Fourth Proportional to 81,179.55, 121,706.44 and 56,147.21

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Solution

The fourth proportional to 81,179.55, 121,706.44 and 56,147.21 is: 84,177.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,179.55 : 121,706.44 = 56,147.21 : x
  2. Step 2: Convert to fraction form
    81,179.55/121,706.44 = 56,147.21/x
  3. Step 3: Cross multiply
    81,179.55x = 121,706.44 × 56,147.21
  4. Step 4: Simplify right side
    81,179.55x = 6,833,477,045.03
  5. Step 5: Solve for x
    x = 6,833,477,045.03/81,179.55
  6. Step 6: Final answer
    x = 84,177.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.