Home / 105,157.12-145,119.84-57,413.50

Finding the Fourth Proportional to 105,157.12, 145,119.84 and 57,413.50

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Solution

The fourth proportional to 105,157.12, 145,119.84 and 57,413.50 is: 79,232.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,157.12 : 145,119.84 = 57,413.50 : x
  2. Step 2: Convert to fraction form
    105,157.12/145,119.84 = 57,413.50/x
  3. Step 3: Cross multiply
    105,157.12x = 145,119.84 × 57,413.50
  4. Step 4: Simplify right side
    105,157.12x = 8,331,837,933.84
  5. Step 5: Solve for x
    x = 8,331,837,933.84/105,157.12
  6. Step 6: Final answer
    x = 79,232.28

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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.