Home / 145,942.38-201,400.83-78,874.38

Finding the Fourth Proportional to 145,942.38, 201,400.83 and 78,874.38

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Solution

The fourth proportional to 145,942.38, 201,400.83 and 78,874.38 is: 108,846.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,942.38 : 201,400.83 = 78,874.38 : x
  2. Step 2: Convert to fraction form
    145,942.38/201,400.83 = 78,874.38/x
  3. Step 3: Cross multiply
    145,942.38x = 201,400.83 × 78,874.38
  4. Step 4: Simplify right side
    145,942.38x = 15,885,365,597.74
  5. Step 5: Solve for x
    x = 15,885,365,597.74/145,942.38
  6. Step 6: Final answer
    x = 108,846.83

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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.