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Finding the Fourth Proportional to 85,766.46, 118,113.03 and 77,195.58

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Solution

The fourth proportional to 85,766.46, 118,113.03 and 77,195.58 is: 106,309.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,766.46 : 118,113.03 = 77,195.58 : x
  2. Step 2: Convert to fraction form
    85,766.46/118,113.03 = 77,195.58/x
  3. Step 3: Cross multiply
    85,766.46x = 118,113.03 × 77,195.58
  4. Step 4: Simplify right side
    85,766.46x = 9,117,803,856.41
  5. Step 5: Solve for x
    x = 9,117,803,856.41/85,766.46
  6. Step 6: Final answer
    x = 106,309.67

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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.