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Finding the Fourth Proportional to 157,450.60, 217,280.42 and 85,830.60

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Solution

The fourth proportional to 157,450.60, 217,280.42 and 85,830.60 is: 118,445.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,450.60 : 217,280.42 = 85,830.60 : x
  2. Step 2: Convert to fraction form
    157,450.60/217,280.42 = 85,830.60/x
  3. Step 3: Cross multiply
    157,450.60x = 217,280.42 × 85,830.60
  4. Step 4: Simplify right side
    157,450.60x = 18,649,308,816.85
  5. Step 5: Solve for x
    x = 18,649,308,816.85/157,450.60
  6. Step 6: Final answer
    x = 118,445.46

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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.