Home / 138,848.48-191,610.60-75,186.80

Finding the Fourth Proportional to 138,848.48, 191,610.60 and 75,186.80

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Solution

The fourth proportional to 138,848.48, 191,610.60 and 75,186.80 is: 103,757.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,848.48 : 191,610.60 = 75,186.80 : x
  2. Step 2: Convert to fraction form
    138,848.48/191,610.60 = 75,186.80/x
  3. Step 3: Cross multiply
    138,848.48x = 191,610.60 × 75,186.80
  4. Step 4: Simplify right side
    138,848.48x = 14,406,587,860.08
  5. Step 5: Solve for x
    x = 14,406,587,860.08/138,848.48
  6. Step 6: Final answer
    x = 103,757.62

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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.