Home / 138,451.03-191,062.53-74,788.84

Finding the Fourth Proportional to 138,451.03, 191,062.53 and 74,788.84

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Solution

The fourth proportional to 138,451.03, 191,062.53 and 74,788.84 is: 103,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,451.03 : 191,062.53 = 74,788.84 : x
  2. Step 2: Convert to fraction form
    138,451.03/191,062.53 = 74,788.84/x
  3. Step 3: Cross multiply
    138,451.03x = 191,062.53 × 74,788.84
  4. Step 4: Simplify right side
    138,451.03x = 14,289,344,986.17
  5. Step 5: Solve for x
    x = 14,289,344,986.17/138,451.03
  6. Step 6: Final answer
    x = 103,208.66

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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.