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Finding the Fourth Proportional to 112,160.40, 168,332.40 and 111,285.60

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Solution

The fourth proportional to 112,160.40, 168,332.40 and 111,285.60 is: 167,019.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,160.40 : 168,332.40 = 111,285.60 : x
  2. Step 2: Convert to fraction form
    112,160.40/168,332.40 = 111,285.60/x
  3. Step 3: Cross multiply
    112,160.40x = 168,332.40 × 111,285.60
  4. Step 4: Simplify right side
    112,160.40x = 18,732,972,133.44
  5. Step 5: Solve for x
    x = 18,732,972,133.44/112,160.40
  6. Step 6: Final answer
    x = 167,019.48

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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.