Home / 136,459.30-188,327.70-76,039.78

Finding the Fourth Proportional to 136,459.30, 188,327.70 and 76,039.78

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Solution

The fourth proportional to 136,459.30, 188,327.70 and 76,039.78 is: 104,942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,459.30 : 188,327.70 = 76,039.78 : x
  2. Step 2: Convert to fraction form
    136,459.30/188,327.70 = 76,039.78/x
  3. Step 3: Cross multiply
    136,459.30x = 188,327.70 × 76,039.78
  4. Step 4: Simplify right side
    136,459.30x = 14,320,396,875.91
  5. Step 5: Solve for x
    x = 14,320,396,875.91/136,459.30
  6. Step 6: Final answer
    x = 104,942.62

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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.