Home / 127,918.40-191,878.04-39,171.51

Finding the Fourth Proportional to 127,918.40, 191,878.04 and 39,171.51

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Solution

The fourth proportional to 127,918.40, 191,878.04 and 39,171.51 is: 58,757.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,918.40 : 191,878.04 = 39,171.51 : x
  2. Step 2: Convert to fraction form
    127,918.40/191,878.04 = 39,171.51/x
  3. Step 3: Cross multiply
    127,918.40x = 191,878.04 × 39,171.51
  4. Step 4: Simplify right side
    127,918.40x = 7,516,152,660.57
  5. Step 5: Solve for x
    x = 7,516,152,660.57/127,918.40
  6. Step 6: Final answer
    x = 58,757.40

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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.