Home / 145,920.20-218,880.30-52,413.80

Finding the Fourth Proportional to 145,920.20, 218,880.30 and 52,413.80

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Solution

The fourth proportional to 145,920.20, 218,880.30 and 52,413.80 is: 78,620.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,920.20 : 218,880.30 = 52,413.80 : x
  2. Step 2: Convert to fraction form
    145,920.20/218,880.30 = 52,413.80/x
  3. Step 3: Cross multiply
    145,920.20x = 218,880.30 × 52,413.80
  4. Step 4: Simplify right side
    145,920.20x = 11,472,348,268.14
  5. Step 5: Solve for x
    x = 11,472,348,268.14/145,920.20
  6. Step 6: Final answer
    x = 78,620.70

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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.