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Finding the Fourth Proportional to 104,811.80, 156,987.30 and 102,507.80

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Solution

The fourth proportional to 104,811.80, 156,987.30 and 102,507.80 is: 153,536.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,811.80 : 156,987.30 = 102,507.80 : x
  2. Step 2: Convert to fraction form
    104,811.80/156,987.30 = 102,507.80/x
  3. Step 3: Cross multiply
    104,811.80x = 156,987.30 × 102,507.80
  4. Step 4: Simplify right side
    104,811.80x = 16,092,422,750.94
  5. Step 5: Solve for x
    x = 16,092,422,750.94/104,811.80
  6. Step 6: Final answer
    x = 153,536.36

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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.