Home / 138,453.03-191,065.29-74,790.84

Finding the Fourth Proportional to 138,453.03, 191,065.29 and 74,790.84

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Solution

The fourth proportional to 138,453.03, 191,065.29 and 74,790.84 is: 103,211.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,453.03 : 191,065.29 = 74,790.84 : x
  2. Step 2: Convert to fraction form
    138,453.03/191,065.29 = 74,790.84/x
  3. Step 3: Cross multiply
    138,453.03x = 191,065.29 × 74,790.84
  4. Step 4: Simplify right side
    138,453.03x = 14,289,933,533.94
  5. Step 5: Solve for x
    x = 14,289,933,533.94/138,453.03
  6. Step 6: Final answer
    x = 103,211.42

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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.