Home / 186,581.28-279,932.40-111,689.76

Finding the Fourth Proportional to 186,581.28, 279,932.40 and 111,689.76

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Solution

The fourth proportional to 186,581.28, 279,932.40 and 111,689.76 is: 167,570.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,581.28 : 279,932.40 = 111,689.76 : x
  2. Step 2: Convert to fraction form
    186,581.28/279,932.40 = 111,689.76/x
  3. Step 3: Cross multiply
    186,581.28x = 279,932.40 × 111,689.76
  4. Step 4: Simplify right side
    186,581.28x = 31,265,582,572.22
  5. Step 5: Solve for x
    x = 31,265,582,572.22/186,581.28
  6. Step 6: Final answer
    x = 167,570.84

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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.