Home / 138,448.51-191,059.04-74,786.34

Finding the Fourth Proportional to 138,448.51, 191,059.04 and 74,786.34

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Solution

The fourth proportional to 138,448.51, 191,059.04 and 74,786.34 is: 103,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,448.51 : 191,059.04 = 74,786.34 : x
  2. Step 2: Convert to fraction form
    138,448.51/191,059.04 = 74,786.34/x
  3. Step 3: Cross multiply
    138,448.51x = 191,059.04 × 74,786.34
  4. Step 4: Simplify right side
    138,448.51x = 14,288,606,325.51
  5. Step 5: Solve for x
    x = 14,288,606,325.51/138,448.51
  6. Step 6: Final answer
    x = 103,205.20

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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.