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Finding the Fourth Proportional to 112,880.80, 169,450.80 and 68,557.60

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Solution

The fourth proportional to 112,880.80, 169,450.80 and 68,557.60 is: 102,915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,880.80 : 169,450.80 = 68,557.60 : x
  2. Step 2: Convert to fraction form
    112,880.80/169,450.80 = 68,557.60/x
  3. Step 3: Cross multiply
    112,880.80x = 169,450.80 × 68,557.60
  4. Step 4: Simplify right side
    112,880.80x = 11,617,140,166.08
  5. Step 5: Solve for x
    x = 11,617,140,166.08/112,880.80
  6. Step 6: Final answer
    x = 102,915.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.