Home / 129,828.40-194,742.60-123,413.20

Finding the Fourth Proportional to 129,828.40, 194,742.60 and 123,413.20

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Solution

The fourth proportional to 129,828.40, 194,742.60 and 123,413.20 is: 185,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,828.40 : 194,742.60 = 123,413.20 : x
  2. Step 2: Convert to fraction form
    129,828.40/194,742.60 = 123,413.20/x
  3. Step 3: Cross multiply
    129,828.40x = 194,742.60 × 123,413.20
  4. Step 4: Simplify right side
    129,828.40x = 24,033,807,442.32
  5. Step 5: Solve for x
    x = 24,033,807,442.32/129,828.40
  6. Step 6: Final answer
    x = 185,119.80

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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.