Home / 199,947.84-275,901-128,424.84

Finding the Fourth Proportional to 199,947.84, 275,901 and 128,424.84

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Solution

The fourth proportional to 199,947.84, 275,901 and 128,424.84 is: 177,208.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,947.84 : 275,901 = 128,424.84 : x
  2. Step 2: Convert to fraction form
    199,947.84/275,901 = 128,424.84/x
  3. Step 3: Cross multiply
    199,947.84x = 275,901 × 128,424.84
  4. Step 4: Simplify right side
    199,947.84x = 35,432,541,780.84
  5. Step 5: Solve for x
    x = 35,432,541,780.84/199,947.84
  6. Step 6: Final answer
    x = 177,208.92

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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.