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Finding the Fourth Proportional to 112,154.40, 168,323.40 and 111,279.60

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Solution

The fourth proportional to 112,154.40, 168,323.40 and 111,279.60 is: 167,010.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,154.40 : 168,323.40 = 111,279.60 : x
  2. Step 2: Convert to fraction form
    112,154.40/168,323.40 = 111,279.60/x
  3. Step 3: Cross multiply
    112,154.40x = 168,323.40 × 111,279.60
  4. Step 4: Simplify right side
    112,154.40x = 18,730,960,622.64
  5. Step 5: Solve for x
    x = 18,730,960,622.64/112,154.40
  6. Step 6: Final answer
    x = 167,010.48

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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.