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Finding the Fourth Proportional to 98,406.40, 147,998.40 and 88,297.60

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Solution

The fourth proportional to 98,406.40, 147,998.40 and 88,297.60 is: 132,795.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,406.40 : 147,998.40 = 88,297.60 : x
  2. Step 2: Convert to fraction form
    98,406.40/147,998.40 = 88,297.60/x
  3. Step 3: Cross multiply
    98,406.40x = 147,998.40 × 88,297.60
  4. Step 4: Simplify right side
    98,406.40x = 13,067,903,523.84
  5. Step 5: Solve for x
    x = 13,067,903,523.84/98,406.40
  6. Step 6: Final answer
    x = 132,795.26

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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.