Home / 145,173.16-200,338.68-81,511.30

Finding the Fourth Proportional to 145,173.16, 200,338.68 and 81,511.30

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Solution

The fourth proportional to 145,173.16, 200,338.68 and 81,511.30 is: 112,485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,173.16 : 200,338.68 = 81,511.30 : x
  2. Step 2: Convert to fraction form
    145,173.16/200,338.68 = 81,511.30/x
  3. Step 3: Cross multiply
    145,173.16x = 200,338.68 × 81,511.30
  4. Step 4: Simplify right side
    145,173.16x = 16,329,866,247.08
  5. Step 5: Solve for x
    x = 16,329,866,247.08/145,173.16
  6. Step 6: Final answer
    x = 112,485.44

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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.