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Finding the Fourth Proportional to 98,223.80, 146,946.90 and 85,220.60

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Solution

The fourth proportional to 98,223.80, 146,946.90 and 85,220.60 is: 127,493.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,223.80 : 146,946.90 = 85,220.60 : x
  2. Step 2: Convert to fraction form
    98,223.80/146,946.90 = 85,220.60/x
  3. Step 3: Cross multiply
    98,223.80x = 146,946.90 × 85,220.60
  4. Step 4: Simplify right side
    98,223.80x = 12,522,902,986.14
  5. Step 5: Solve for x
    x = 12,522,902,986.14/98,223.80
  6. Step 6: Final answer
    x = 127,493.57

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1.5x scale

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.