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Finding the Fourth Proportional to 112,265,128.80, 168,397,693.20 and 112,265,128.80

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Solution

The fourth proportional to 112,265,128.80, 168,397,693.20 and 112,265,128.80 is: 168,397,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,265,128.80 : 168,397,693.20 = 112,265,128.80 : x
  2. Step 2: Convert to fraction form
    112,265,128.80/168,397,693.20 = 112,265,128.80/x
  3. Step 3: Cross multiply
    112,265,128.80x = 168,397,693.20 × 112,265,128.80
  4. Step 4: Simplify right side
    112,265,128.80x = 18,905,188,716,720,884
  5. Step 5: Solve for x
    x = 18,905,188,716,720,884/112,265,128.80
  6. Step 6: Final answer
    x = 168,397,693.20

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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.