Home / 138,828.96-191,583.08-75,166.56

Finding the Fourth Proportional to 138,828.96, 191,583.08 and 75,166.56

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Solution

The fourth proportional to 138,828.96, 191,583.08 and 75,166.56 is: 103,729.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,828.96 : 191,583.08 = 75,166.56 : x
  2. Step 2: Convert to fraction form
    138,828.96/191,583.08 = 75,166.56/x
  3. Step 3: Cross multiply
    138,828.96x = 191,583.08 × 75,166.56
  4. Step 4: Simplify right side
    138,828.96x = 14,400,641,077.80
  5. Step 5: Solve for x
    x = 14,400,641,077.80/138,828.96
  6. Step 6: Final answer
    x = 103,729.37

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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.