Home / 112,718.70-169,003.02-67,638.56

Finding the Fourth Proportional to 112,718.70, 169,003.02 and 67,638.56

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Solution

The fourth proportional to 112,718.70, 169,003.02 and 67,638.56 is: 101,412.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,718.70 : 169,003.02 = 67,638.56 : x
  2. Step 2: Convert to fraction form
    112,718.70/169,003.02 = 67,638.56/x
  3. Step 3: Cross multiply
    112,718.70x = 169,003.02 × 67,638.56
  4. Step 4: Simplify right side
    112,718.70x = 11,431,120,317.08
  5. Step 5: Solve for x
    x = 11,431,120,317.08/112,718.70
  6. Step 6: Final answer
    x = 101,412.81

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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.