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Finding the Fourth Proportional to 112,422, 168,328.88 and 70,200.96

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Solution

The fourth proportional to 112,422, 168,328.88 and 70,200.96 is: 105,111.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,422 : 168,328.88 = 70,200.96 : x
  2. Step 2: Convert to fraction form
    112,422/168,328.88 = 70,200.96/x
  3. Step 3: Cross multiply
    112,422x = 168,328.88 × 70,200.96
  4. Step 4: Simplify right side
    112,422x = 11,816,848,971.72
  5. Step 5: Solve for x
    x = 11,816,848,971.72/112,422
  6. Step 6: Final answer
    x = 105,111.53

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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.