Home / 127,309.18-190,962.54-77,403.06

Finding the Fourth Proportional to 127,309.18, 190,962.54 and 77,403.06

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Solution

The fourth proportional to 127,309.18, 190,962.54 and 77,403.06 is: 116,103.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,309.18 : 190,962.54 = 77,403.06 : x
  2. Step 2: Convert to fraction form
    127,309.18/190,962.54 = 77,403.06/x
  3. Step 3: Cross multiply
    127,309.18x = 190,962.54 × 77,403.06
  4. Step 4: Simplify right side
    127,309.18x = 14,781,083,986.56
  5. Step 5: Solve for x
    x = 14,781,083,986.56/127,309.18
  6. Step 6: Final answer
    x = 116,103.83

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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.