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Finding the Fourth Proportional to 121,626.64, 167,861.58 and 67,915.14

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Solution

The fourth proportional to 121,626.64, 167,861.58 and 67,915.14 is: 93,732.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,626.64 : 167,861.58 = 67,915.14 : x
  2. Step 2: Convert to fraction form
    121,626.64/167,861.58 = 67,915.14/x
  3. Step 3: Cross multiply
    121,626.64x = 167,861.58 × 67,915.14
  4. Step 4: Simplify right side
    121,626.64x = 11,400,342,706.32
  5. Step 5: Solve for x
    x = 11,400,342,706.32/121,626.64
  6. Step 6: Final answer
    x = 93,732.28

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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.