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Finding the Fourth Proportional to 157,395.62, 217,205.97 and 85,775.60

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Solution

The fourth proportional to 157,395.62, 217,205.97 and 85,775.60 is: 118,370.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,395.62 : 217,205.97 = 85,775.60 : x
  2. Step 2: Convert to fraction form
    157,395.62/217,205.97 = 85,775.60/x
  3. Step 3: Cross multiply
    157,395.62x = 217,205.97 × 85,775.60
  4. Step 4: Simplify right side
    157,395.62x = 18,630,972,400.33
  5. Step 5: Solve for x
    x = 18,630,972,400.33/157,395.62
  6. Step 6: Final answer
    x = 118,370.34

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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.