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Finding the Fourth Proportional to 117,907.57, 162,715.91 and 66,919.17

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Solution

The fourth proportional to 117,907.57, 162,715.91 and 66,919.17 is: 92,350.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,907.57 : 162,715.91 = 66,919.17 : x
  2. Step 2: Convert to fraction form
    117,907.57/162,715.91 = 66,919.17/x
  3. Step 3: Cross multiply
    117,907.57x = 162,715.91 × 66,919.17
  4. Step 4: Simplify right side
    117,907.57x = 10,888,813,642.99
  5. Step 5: Solve for x
    x = 10,888,813,642.99/117,907.57
  6. Step 6: Final answer
    x = 92,350.42

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1.5x scale

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.