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Finding the Fourth Proportional to 122,362.40, 183,543.60 and 85,037.60

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Solution

The fourth proportional to 122,362.40, 183,543.60 and 85,037.60 is: 127,556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,362.40 : 183,543.60 = 85,037.60 : x
  2. Step 2: Convert to fraction form
    122,362.40/183,543.60 = 85,037.60/x
  3. Step 3: Cross multiply
    122,362.40x = 183,543.60 × 85,037.60
  4. Step 4: Simplify right side
    122,362.40x = 15,608,107,239.36
  5. Step 5: Solve for x
    x = 15,608,107,239.36/122,362.40
  6. Step 6: Final answer
    x = 127,556.40

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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.