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Finding the Fourth Proportional to 104,004.40, 156,006.60 and 79,428.40

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Solution

The fourth proportional to 104,004.40, 156,006.60 and 79,428.40 is: 119,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,004.40 : 156,006.60 = 79,428.40 : x
  2. Step 2: Convert to fraction form
    104,004.40/156,006.60 = 79,428.40/x
  3. Step 3: Cross multiply
    104,004.40x = 156,006.60 × 79,428.40
  4. Step 4: Simplify right side
    104,004.40x = 12,391,354,627.44
  5. Step 5: Solve for x
    x = 12,391,354,627.44/104,004.40
  6. Step 6: Final answer
    x = 119,142.60

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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.