Home / 112,986.72-169,369.76-53,806.56

Finding the Fourth Proportional to 112,986.72, 169,369.76 and 53,806.56

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Solution

The fourth proportional to 112,986.72, 169,369.76 and 53,806.56 is: 80,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,986.72 : 169,369.76 = 53,806.56 : x
  2. Step 2: Convert to fraction form
    112,986.72/169,369.76 = 53,806.56/x
  3. Step 3: Cross multiply
    112,986.72x = 169,369.76 × 53,806.56
  4. Step 4: Simplify right side
    112,986.72x = 9,113,204,153.63
  5. Step 5: Solve for x
    x = 9,113,204,153.63/112,986.72
  6. Step 6: Final answer
    x = 80,657.30

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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.