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Finding the Fourth Proportional to 104,048.40, 156,072.60 and 83,312.40

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Solution

The fourth proportional to 104,048.40, 156,072.60 and 83,312.40 is: 124,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,048.40 : 156,072.60 = 83,312.40 : x
  2. Step 2: Convert to fraction form
    104,048.40/156,072.60 = 83,312.40/x
  3. Step 3: Cross multiply
    104,048.40x = 156,072.60 × 83,312.40
  4. Step 4: Simplify right side
    104,048.40x = 13,002,782,880.24
  5. Step 5: Solve for x
    x = 13,002,782,880.24/104,048.40
  6. Step 6: Final answer
    x = 124,968.60

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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.