Home / 100,792.35-139,099.95-66,741.57

Finding the Fourth Proportional to 100,792.35, 139,099.95 and 66,741.57

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Solution

The fourth proportional to 100,792.35, 139,099.95 and 66,741.57 is: 92,107.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,792.35 : 139,099.95 = 66,741.57 : x
  2. Step 2: Convert to fraction form
    100,792.35/139,099.95 = 66,741.57/x
  3. Step 3: Cross multiply
    100,792.35x = 139,099.95 × 66,741.57
  4. Step 4: Simplify right side
    100,792.35x = 9,283,749,049.92
  5. Step 5: Solve for x
    x = 9,283,749,049.92/100,792.35
  6. Step 6: Final answer
    x = 92,107.68

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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.