Home / 105,915.81-146,163.25-57,517.32

Finding the Fourth Proportional to 105,915.81, 146,163.25 and 57,517.32

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Solution

The fourth proportional to 105,915.81, 146,163.25 and 57,517.32 is: 79,373.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,915.81 : 146,163.25 = 57,517.32 : x
  2. Step 2: Convert to fraction form
    105,915.81/146,163.25 = 57,517.32/x
  3. Step 3: Cross multiply
    105,915.81x = 146,163.25 × 57,517.32
  4. Step 4: Simplify right side
    105,915.81x = 8,406,918,422.49
  5. Step 5: Solve for x
    x = 8,406,918,422.49/105,915.81
  6. Step 6: Final answer
    x = 79,373.59

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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.