Home / 128,800.08-193,255.74-69,677.37

Finding the Fourth Proportional to 128,800.08, 193,255.74 and 69,677.37

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Solution

The fourth proportional to 128,800.08, 193,255.74 and 69,677.37 is: 104,546.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,800.08 : 193,255.74 = 69,677.37 : x
  2. Step 2: Convert to fraction form
    128,800.08/193,255.74 = 69,677.37/x
  3. Step 3: Cross multiply
    128,800.08x = 193,255.74 × 69,677.37
  4. Step 4: Simplify right side
    128,800.08x = 13,465,551,700.60
  5. Step 5: Solve for x
    x = 13,465,551,700.60/128,800.08
  6. Step 6: Final answer
    x = 104,546.14

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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.