Home / 112,047.40-168,071.10-111,391.30

Finding the Fourth Proportional to 112,047.40, 168,071.10 and 111,391.30

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Solution

The fourth proportional to 112,047.40, 168,071.10 and 111,391.30 is: 167,086.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,047.40 : 168,071.10 = 111,391.30 : x
  2. Step 2: Convert to fraction form
    112,047.40/168,071.10 = 111,391.30/x
  3. Step 3: Cross multiply
    112,047.40x = 168,071.10 × 111,391.30
  4. Step 4: Simplify right side
    112,047.40x = 18,721,658,321.43
  5. Step 5: Solve for x
    x = 18,721,658,321.43/112,047.40
  6. Step 6: Final answer
    x = 167,086.95

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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.