Home / 112,938.60-169,638.30-109,021.80

Finding the Fourth Proportional to 112,938.60, 169,638.30 and 109,021.80

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Solution

The fourth proportional to 112,938.60, 169,638.30 and 109,021.80 is: 163,755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,938.60 : 169,638.30 = 109,021.80 : x
  2. Step 2: Convert to fraction form
    112,938.60/169,638.30 = 109,021.80/x
  3. Step 3: Cross multiply
    112,938.60x = 169,638.30 × 109,021.80
  4. Step 4: Simplify right side
    112,938.60x = 18,494,272,814.94
  5. Step 5: Solve for x
    x = 18,494,272,814.94/112,938.60
  6. Step 6: Final answer
    x = 163,755.11

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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.