Home / 111,989.08-154,533.72-68,961.68

Finding the Fourth Proportional to 111,989.08, 154,533.72 and 68,961.68

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Solution

The fourth proportional to 111,989.08, 154,533.72 and 68,961.68 is: 95,160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,989.08 : 154,533.72 = 68,961.68 : x
  2. Step 2: Convert to fraction form
    111,989.08/154,533.72 = 68,961.68/x
  3. Step 3: Cross multiply
    111,989.08x = 154,533.72 × 68,961.68
  4. Step 4: Simplify right side
    111,989.08x = 10,656,905,013.29
  5. Step 5: Solve for x
    x = 10,656,905,013.29/111,989.08
  6. Step 6: Final answer
    x = 95,160.21

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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.