Home / 127,918.51-191,878.22-39,171.65

Finding the Fourth Proportional to 127,918.51, 191,878.22 and 39,171.65

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Solution

The fourth proportional to 127,918.51, 191,878.22 and 39,171.65 is: 58,757.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,918.51 : 191,878.22 = 39,171.65 : x
  2. Step 2: Convert to fraction form
    127,918.51/191,878.22 = 39,171.65/x
  3. Step 3: Cross multiply
    127,918.51x = 191,878.22 × 39,171.65
  4. Step 4: Simplify right side
    127,918.51x = 7,516,186,476.46
  5. Step 5: Solve for x
    x = 7,516,186,476.46/127,918.51
  6. Step 6: Final answer
    x = 58,757.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.