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Finding the Fourth Proportional to 104,610.40, 156,915.60 and 64,661.20

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Solution

The fourth proportional to 104,610.40, 156,915.60 and 64,661.20 is: 96,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,610.40 : 156,915.60 = 64,661.20 : x
  2. Step 2: Convert to fraction form
    104,610.40/156,915.60 = 64,661.20/x
  3. Step 3: Cross multiply
    104,610.40x = 156,915.60 × 64,661.20
  4. Step 4: Simplify right side
    104,610.40x = 10,146,350,994.72
  5. Step 5: Solve for x
    x = 10,146,350,994.72/104,610.40
  6. Step 6: Final answer
    x = 96,991.80

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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.