Home / 103,078.58-142,257.13-57,755.84

Finding the Fourth Proportional to 103,078.58, 142,257.13 and 57,755.84

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Solution

The fourth proportional to 103,078.58, 142,257.13 and 57,755.84 is: 79,707.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,078.58 : 142,257.13 = 57,755.84 : x
  2. Step 2: Convert to fraction form
    103,078.58/142,257.13 = 57,755.84/x
  3. Step 3: Cross multiply
    103,078.58x = 142,257.13 × 57,755.84
  4. Step 4: Simplify right side
    103,078.58x = 8,216,179,183.46
  5. Step 5: Solve for x
    x = 8,216,179,183.46/103,078.58
  6. Step 6: Final answer
    x = 79,707.92

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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.