Home / 117,366.45-161,915.40-79,150.65

Finding the Fourth Proportional to 117,366.45, 161,915.40 and 79,150.65

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Solution

The fourth proportional to 117,366.45, 161,915.40 and 79,150.65 is: 109,193.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,366.45 : 161,915.40 = 79,150.65 : x
  2. Step 2: Convert to fraction form
    117,366.45/161,915.40 = 79,150.65/x
  3. Step 3: Cross multiply
    117,366.45x = 161,915.40 × 79,150.65
  4. Step 4: Simplify right side
    117,366.45x = 12,815,709,155.01
  5. Step 5: Solve for x
    x = 12,815,709,155.01/117,366.45
  6. Step 6: Final answer
    x = 109,193.97

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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.