Home / 128,526.69-177,367.73-74,843.01

Finding the Fourth Proportional to 128,526.69, 177,367.73 and 74,843.01

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Solution

The fourth proportional to 128,526.69, 177,367.73 and 74,843.01 is: 103,283.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,526.69 : 177,367.73 = 74,843.01 : x
  2. Step 2: Convert to fraction form
    128,526.69/177,367.73 = 74,843.01/x
  3. Step 3: Cross multiply
    128,526.69x = 177,367.73 × 74,843.01
  4. Step 4: Simplify right side
    128,526.69x = 13,274,734,415.85
  5. Step 5: Solve for x
    x = 13,274,734,415.85/128,526.69
  6. Step 6: Final answer
    x = 103,283.87

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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.