Home / 103,671.09-155,415.92-86,048.33

Finding the Fourth Proportional to 103,671.09, 155,415.92 and 86,048.33

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Solution

The fourth proportional to 103,671.09, 155,415.92 and 86,048.33 is: 128,997.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,671.09 : 155,415.92 = 86,048.33 : x
  2. Step 2: Convert to fraction form
    103,671.09/155,415.92 = 86,048.33/x
  3. Step 3: Cross multiply
    103,671.09x = 155,415.92 × 86,048.33
  4. Step 4: Simplify right side
    103,671.09x = 13,373,279,164.09
  5. Step 5: Solve for x
    x = 13,373,279,164.09/103,671.09
  6. Step 6: Final answer
    x = 128,997.19

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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.