Home / 128,596.23-177,458.78-71,233.25

Finding the Fourth Proportional to 128,596.23, 177,458.78 and 71,233.25

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Solution

The fourth proportional to 128,596.23, 177,458.78 and 71,233.25 is: 98,299.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,596.23 : 177,458.78 = 71,233.25 : x
  2. Step 2: Convert to fraction form
    128,596.23/177,458.78 = 71,233.25/x
  3. Step 3: Cross multiply
    128,596.23x = 177,458.78 × 71,233.25
  4. Step 4: Simplify right side
    128,596.23x = 12,640,964,931.22
  5. Step 5: Solve for x
    x = 12,640,964,931.22/128,596.23
  6. Step 6: Final answer
    x = 98,299.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.