Home / 200,087.80-276,158.10-128,557.24

Finding the Fourth Proportional to 200,087.80, 276,158.10 and 128,557.24

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Solution

The fourth proportional to 200,087.80, 276,158.10 and 128,557.24 is: 177,432.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,087.80 : 276,158.10 = 128,557.24 : x
  2. Step 2: Convert to fraction form
    200,087.80/276,158.10 = 128,557.24/x
  3. Step 3: Cross multiply
    200,087.80x = 276,158.10 × 128,557.24
  4. Step 4: Simplify right side
    200,087.80x = 35,502,123,139.64
  5. Step 5: Solve for x
    x = 35,502,123,139.64/200,087.80
  6. Step 6: Final answer
    x = 177,432.72

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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.