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Finding the Fourth Proportional to 112,463.55, 168,611.04 and 68,079.60

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Solution

The fourth proportional to 112,463.55, 168,611.04 and 68,079.60 is: 102,068.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,463.55 : 168,611.04 = 68,079.60 : x
  2. Step 2: Convert to fraction form
    112,463.55/168,611.04 = 68,079.60/x
  3. Step 3: Cross multiply
    112,463.55x = 168,611.04 × 68,079.60
  4. Step 4: Simplify right side
    112,463.55x = 11,478,972,158.78
  5. Step 5: Solve for x
    x = 11,478,972,158.78/112,463.55
  6. Step 6: Final answer
    x = 102,068.38

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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.