Home / 103,328.55-142,556.71-67,539.21

Finding the Fourth Proportional to 103,328.55, 142,556.71 and 67,539.21

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Solution

The fourth proportional to 103,328.55, 142,556.71 and 67,539.21 is: 93,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,328.55 : 142,556.71 = 67,539.21 : x
  2. Step 2: Convert to fraction form
    103,328.55/142,556.71 = 67,539.21/x
  3. Step 3: Cross multiply
    103,328.55x = 142,556.71 × 67,539.21
  4. Step 4: Simplify right side
    103,328.55x = 9,628,166,523.12
  5. Step 5: Solve for x
    x = 9,628,166,523.12/103,328.55
  6. Step 6: Final answer
    x = 93,180.12

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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.