Home / 138,828.51-191,583.72-75,166.17

Finding the Fourth Proportional to 138,828.51, 191,583.72 and 75,166.17

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Solution

The fourth proportional to 138,828.51, 191,583.72 and 75,166.17 is: 103,729.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,828.51 : 191,583.72 = 75,166.17 : x
  2. Step 2: Convert to fraction form
    138,828.51/191,583.72 = 75,166.17/x
  3. Step 3: Cross multiply
    138,828.51x = 191,583.72 × 75,166.17
  4. Step 4: Simplify right side
    138,828.51x = 14,400,614,466.75
  5. Step 5: Solve for x
    x = 14,400,614,466.75/138,828.51
  6. Step 6: Final answer
    x = 103,729.52

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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.