Home / 103,220.53-142,391.82-67,431.49

Finding the Fourth Proportional to 103,220.53, 142,391.82 and 67,431.49

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Solution

The fourth proportional to 103,220.53, 142,391.82 and 67,431.49 is: 93,021.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,220.53 : 142,391.82 = 67,431.49 : x
  2. Step 2: Convert to fraction form
    103,220.53/142,391.82 = 67,431.49/x
  3. Step 3: Cross multiply
    103,220.53x = 142,391.82 × 67,431.49
  4. Step 4: Simplify right side
    103,220.53x = 9,601,692,586.41
  5. Step 5: Solve for x
    x = 9,601,692,586.41/103,220.53
  6. Step 6: Final answer
    x = 93,021.15

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1.5x scale

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.