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Finding the Fourth Proportional to 121,018.44, 166,989.42 and 67,292.76

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Solution

The fourth proportional to 121,018.44, 166,989.42 and 67,292.76 is: 92,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,018.44 : 166,989.42 = 67,292.76 : x
  2. Step 2: Convert to fraction form
    121,018.44/166,989.42 = 67,292.76/x
  3. Step 3: Cross multiply
    121,018.44x = 166,989.42 × 67,292.76
  4. Step 4: Simplify right side
    121,018.44x = 11,237,178,962.60
  5. Step 5: Solve for x
    x = 11,237,178,962.60/121,018.44
  6. Step 6: Final answer
    x = 92,855.10

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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.