Home / 149,386.55-206,154.20-81,404.27

Finding the Fourth Proportional to 149,386.55, 206,154.20 and 81,404.27

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Solution

The fourth proportional to 149,386.55, 206,154.20 and 81,404.27 is: 112,338.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,386.55 : 206,154.20 = 81,404.27 : x
  2. Step 2: Convert to fraction form
    149,386.55/206,154.20 = 81,404.27/x
  3. Step 3: Cross multiply
    149,386.55x = 206,154.20 × 81,404.27
  4. Step 4: Simplify right side
    149,386.55x = 16,781,832,158.43
  5. Step 5: Solve for x
    x = 16,781,832,158.43/149,386.55
  6. Step 6: Final answer
    x = 112,338.31

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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.