Home / 131,008.21-180,662.89-83,178.52

Finding the Fourth Proportional to 131,008.21, 180,662.89 and 83,178.52

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Solution

The fourth proportional to 131,008.21, 180,662.89 and 83,178.52 is: 114,704.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,008.21 : 180,662.89 = 83,178.52 : x
  2. Step 2: Convert to fraction form
    131,008.21/180,662.89 = 83,178.52/x
  3. Step 3: Cross multiply
    131,008.21x = 180,662.89 × 83,178.52
  4. Step 4: Simplify right side
    131,008.21x = 15,027,271,461.44
  5. Step 5: Solve for x
    x = 15,027,271,461.44/131,008.21
  6. Step 6: Final answer
    x = 114,704.81

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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.