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Finding the Fourth Proportional to 98,795.60, 148,193.40 and 68,728.40

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Solution

The fourth proportional to 98,795.60, 148,193.40 and 68,728.40 is: 103,092.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,795.60 : 148,193.40 = 68,728.40 : x
  2. Step 2: Convert to fraction form
    98,795.60/148,193.40 = 68,728.40/x
  3. Step 3: Cross multiply
    98,795.60x = 148,193.40 × 68,728.40
  4. Step 4: Simplify right side
    98,795.60x = 10,185,095,272.56
  5. Step 5: Solve for x
    x = 10,185,095,272.56/98,795.60
  6. Step 6: Final answer
    x = 103,092.60

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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.