Home / 145,177.08-200,339.19-81,517.56

Finding the Fourth Proportional to 145,177.08, 200,339.19 and 81,517.56

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Solution

The fourth proportional to 145,177.08, 200,339.19 and 81,517.56 is: 112,491.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,177.08 : 200,339.19 = 81,517.56 : x
  2. Step 2: Convert to fraction form
    145,177.08/200,339.19 = 81,517.56/x
  3. Step 3: Cross multiply
    145,177.08x = 200,339.19 × 81,517.56
  4. Step 4: Simplify right side
    145,177.08x = 16,331,161,941.18
  5. Step 5: Solve for x
    x = 16,331,161,941.18/145,177.08
  6. Step 6: Final answer
    x = 112,491.32

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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.