Home / 200,023.10-275,901.81-128,289.50

Finding the Fourth Proportional to 200,023.10, 275,901.81 and 128,289.50

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Solution

The fourth proportional to 200,023.10, 275,901.81 and 128,289.50 is: 176,956.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,023.10 : 275,901.81 = 128,289.50 : x
  2. Step 2: Convert to fraction form
    200,023.10/275,901.81 = 128,289.50/x
  3. Step 3: Cross multiply
    200,023.10x = 275,901.81 × 128,289.50
  4. Step 4: Simplify right side
    200,023.10x = 35,395,303,874.49
  5. Step 5: Solve for x
    x = 35,395,303,874.49/200,023.10
  6. Step 6: Final answer
    x = 176,956.09

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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.