Home / 117,868.74-162,731.53-81,137.67

Finding the Fourth Proportional to 117,868.74, 162,731.53 and 81,137.67

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Solution

The fourth proportional to 117,868.74, 162,731.53 and 81,137.67 is: 112,020.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,868.74 : 162,731.53 = 81,137.67 : x
  2. Step 2: Convert to fraction form
    117,868.74/162,731.53 = 81,137.67/x
  3. Step 3: Cross multiply
    117,868.74x = 162,731.53 × 81,137.67
  4. Step 4: Simplify right side
    117,868.74x = 13,203,656,366.08
  5. Step 5: Solve for x
    x = 13,203,656,366.08/117,868.74
  6. Step 6: Final answer
    x = 112,020.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.