Home / 103,200.88-142,418.78-57,888.92

Finding the Fourth Proportional to 103,200.88, 142,418.78 and 57,888.92

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Solution

The fourth proportional to 103,200.88, 142,418.78 and 57,888.92 is: 79,887.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,200.88 : 142,418.78 = 57,888.92 : x
  2. Step 2: Convert to fraction form
    103,200.88/142,418.78 = 57,888.92/x
  3. Step 3: Cross multiply
    103,200.88x = 142,418.78 × 57,888.92
  4. Step 4: Simplify right side
    103,200.88x = 8,244,469,361.92
  5. Step 5: Solve for x
    x = 8,244,469,361.92/103,200.88
  6. Step 6: Final answer
    x = 79,887.59

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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.