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Finding the Fourth Proportional to 112,698.96, 155,358.96 and 85,794.60

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Solution

The fourth proportional to 112,698.96, 155,358.96 and 85,794.60 is: 118,270.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,698.96 : 155,358.96 = 85,794.60 : x
  2. Step 2: Convert to fraction form
    112,698.96/155,358.96 = 85,794.60/x
  3. Step 3: Cross multiply
    112,698.96x = 155,358.96 × 85,794.60
  4. Step 4: Simplify right side
    112,698.96x = 13,328,959,829.62
  5. Step 5: Solve for x
    x = 13,328,959,829.62/112,698.96
  6. Step 6: Final answer
    x = 118,270.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.