Home / 120,838.18-166,752-67,126.60

Finding the Fourth Proportional to 120,838.18, 166,752 and 67,126.60

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Solution

The fourth proportional to 120,838.18, 166,752 and 67,126.60 is: 92,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,838.18 : 166,752 = 67,126.60 : x
  2. Step 2: Convert to fraction form
    120,838.18/166,752 = 67,126.60/x
  3. Step 3: Cross multiply
    120,838.18x = 166,752 × 67,126.60
  4. Step 4: Simplify right side
    120,838.18x = 11,193,494,803.20
  5. Step 5: Solve for x
    x = 11,193,494,803.20/120,838.18
  6. Step 6: Final answer
    x = 92,632.10

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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.