Home / 423,121.20-634,710.60-123,601.20

Finding the Fourth Proportional to 423,121.20, 634,710.60 and 123,601.20

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Solution

The fourth proportional to 423,121.20, 634,710.60 and 123,601.20 is: 185,410.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,121.20 : 634,710.60 = 123,601.20 : x
  2. Step 2: Convert to fraction form
    423,121.20/634,710.60 = 123,601.20/x
  3. Step 3: Cross multiply
    423,121.20x = 634,710.60 × 123,601.20
  4. Step 4: Simplify right side
    423,121.20x = 78,450,991,812.72
  5. Step 5: Solve for x
    x = 78,450,991,812.72/423,121.20
  6. Step 6: Final answer
    x = 185,410.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.