Home / 186,039.90-279,059.85-111,390.30

Finding the Fourth Proportional to 186,039.90, 279,059.85 and 111,390.30

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Solution

The fourth proportional to 186,039.90, 279,059.85 and 111,390.30 is: 167,085.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,039.90 : 279,059.85 = 111,390.30 : x
  2. Step 2: Convert to fraction form
    186,039.90/279,059.85 = 111,390.30/x
  3. Step 3: Cross multiply
    186,039.90x = 279,059.85 × 111,390.30
  4. Step 4: Simplify right side
    186,039.90x = 31,084,560,409.46
  5. Step 5: Solve for x
    x = 31,084,560,409.46/186,039.90
  6. Step 6: Final answer
    x = 167,085.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.