Home / 148,768.05-205,299.66-81,700.05

Finding the Fourth Proportional to 148,768.05, 205,299.66 and 81,700.05

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Solution

The fourth proportional to 148,768.05, 205,299.66 and 81,700.05 is: 112,745.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,768.05 : 205,299.66 = 81,700.05 : x
  2. Step 2: Convert to fraction form
    148,768.05/205,299.66 = 81,700.05/x
  3. Step 3: Cross multiply
    148,768.05x = 205,299.66 × 81,700.05
  4. Step 4: Simplify right side
    148,768.05x = 16,772,992,486.98
  5. Step 5: Solve for x
    x = 16,772,992,486.98/148,768.05
  6. Step 6: Final answer
    x = 112,745.93

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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.