Home / 111,036.90-166,360.95-91,208.10

Finding the Fourth Proportional to 111,036.90, 166,360.95 and 91,208.10

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Solution

The fourth proportional to 111,036.90, 166,360.95 and 91,208.10 is: 136,652.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,036.90 : 166,360.95 = 91,208.10 : x
  2. Step 2: Convert to fraction form
    111,036.90/166,360.95 = 91,208.10/x
  3. Step 3: Cross multiply
    111,036.90x = 166,360.95 × 91,208.10
  4. Step 4: Simplify right side
    111,036.90x = 15,173,466,163.70
  5. Step 5: Solve for x
    x = 15,173,466,163.70/111,036.90
  6. Step 6: Final answer
    x = 136,652.47

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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.