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Finding the Fourth Proportional to 108,980.98, 150,393.88 and 61,234.30

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Solution

The fourth proportional to 108,980.98, 150,393.88 and 61,234.30 is: 84,503.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,980.98 : 150,393.88 = 61,234.30 : x
  2. Step 2: Convert to fraction form
    108,980.98/150,393.88 = 61,234.30/x
  3. Step 3: Cross multiply
    108,980.98x = 150,393.88 × 61,234.30
  4. Step 4: Simplify right side
    108,980.98x = 9,209,263,966.08
  5. Step 5: Solve for x
    x = 9,209,263,966.08/108,980.98
  6. Step 6: Final answer
    x = 84,503.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.