Home / 145,413.21-218,236.46-75,312.57

Finding the Fourth Proportional to 145,413.21, 218,236.46 and 75,312.57

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Solution

The fourth proportional to 145,413.21, 218,236.46 and 75,312.57 is: 113,029.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,413.21 : 218,236.46 = 75,312.57 : x
  2. Step 2: Convert to fraction form
    145,413.21/218,236.46 = 75,312.57/x
  3. Step 3: Cross multiply
    145,413.21x = 218,236.46 × 75,312.57
  4. Step 4: Simplify right side
    145,413.21x = 16,435,948,293.74
  5. Step 5: Solve for x
    x = 16,435,948,293.74/145,413.21
  6. Step 6: Final answer
    x = 113,029.27

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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.