Home / 139,985.29-193,180.62-76,324.15

Finding the Fourth Proportional to 139,985.29, 193,180.62 and 76,324.15

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Solution

The fourth proportional to 139,985.29, 193,180.62 and 76,324.15 is: 105,327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,985.29 : 193,180.62 = 76,324.15 : x
  2. Step 2: Convert to fraction form
    139,985.29/193,180.62 = 76,324.15/x
  3. Step 3: Cross multiply
    139,985.29x = 193,180.62 × 76,324.15
  4. Step 4: Simplify right side
    139,985.29x = 14,744,346,617.97
  5. Step 5: Solve for x
    x = 14,744,346,617.97/139,985.29
  6. Step 6: Final answer
    x = 105,327.83

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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.