Home / 148,790.16-205,333.12-80,807.12

Finding the Fourth Proportional to 148,790.16, 205,333.12 and 80,807.12

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Solution

The fourth proportional to 148,790.16, 205,333.12 and 80,807.12 is: 111,515.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,790.16 : 205,333.12 = 80,807.12 : x
  2. Step 2: Convert to fraction form
    148,790.16/205,333.12 = 80,807.12/x
  3. Step 3: Cross multiply
    148,790.16x = 205,333.12 × 80,807.12
  4. Step 4: Simplify right side
    148,790.16x = 16,592,378,067.81
  5. Step 5: Solve for x
    x = 16,592,378,067.81/148,790.16
  6. Step 6: Final answer
    x = 111,515.29

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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.