Home / 145,399.38-200,650.95-81,737.43

Finding the Fourth Proportional to 145,399.38, 200,650.95 and 81,737.43

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Solution

The fourth proportional to 145,399.38, 200,650.95 and 81,737.43 is: 112,797.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,399.38 : 200,650.95 = 81,737.43 : x
  2. Step 2: Convert to fraction form
    145,399.38/200,650.95 = 81,737.43/x
  3. Step 3: Cross multiply
    145,399.38x = 200,650.95 × 81,737.43
  4. Step 4: Simplify right side
    145,399.38x = 16,400,692,980.06
  5. Step 5: Solve for x
    x = 16,400,692,980.06/145,399.38
  6. Step 6: Final answer
    x = 112,797.54

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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.