Home / 138,580.47-191,241-74,918.25

Finding the Fourth Proportional to 138,580.47, 191,241 and 74,918.25

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Solution

The fourth proportional to 138,580.47, 191,241 and 74,918.25 is: 103,387.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,580.47 : 191,241 = 74,918.25 : x
  2. Step 2: Convert to fraction form
    138,580.47/191,241 = 74,918.25/x
  3. Step 3: Cross multiply
    138,580.47x = 191,241 × 74,918.25
  4. Step 4: Simplify right side
    138,580.47x = 14,327,441,048.25
  5. Step 5: Solve for x
    x = 14,327,441,048.25/138,580.47
  6. Step 6: Final answer
    x = 103,387.16

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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.