Home / 200,038.12-275,801.70-128,291.56

Finding the Fourth Proportional to 200,038.12, 275,801.70 and 128,291.56

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Solution

The fourth proportional to 200,038.12, 275,801.70 and 128,291.56 is: 176,881.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,038.12 : 275,801.70 = 128,291.56 : x
  2. Step 2: Convert to fraction form
    200,038.12/275,801.70 = 128,291.56/x
  3. Step 3: Cross multiply
    200,038.12x = 275,801.70 × 128,291.56
  4. Step 4: Simplify right side
    200,038.12x = 35,383,030,343.65
  5. Step 5: Solve for x
    x = 35,383,030,343.65/200,038.12
  6. Step 6: Final answer
    x = 176,881.44

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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.