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Finding the Fourth Proportional to 104,810.80, 156,985.80 and 102,506.80

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Solution

The fourth proportional to 104,810.80, 156,985.80 and 102,506.80 is: 153,534.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,810.80 : 156,985.80 = 102,506.80 : x
  2. Step 2: Convert to fraction form
    104,810.80/156,985.80 = 102,506.80/x
  3. Step 3: Cross multiply
    104,810.80x = 156,985.80 × 102,506.80
  4. Step 4: Simplify right side
    104,810.80x = 16,092,112,003.44
  5. Step 5: Solve for x
    x = 16,092,112,003.44/104,810.80
  6. Step 6: Final answer
    x = 153,534.86

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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.