Home / 186,856.43-280,111.93-74,509.31

Finding the Fourth Proportional to 186,856.43, 280,111.93 and 74,509.31

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Solution

The fourth proportional to 186,856.43, 280,111.93 and 74,509.31 is: 111,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,856.43 : 280,111.93 = 74,509.31 : x
  2. Step 2: Convert to fraction form
    186,856.43/280,111.93 = 74,509.31/x
  3. Step 3: Cross multiply
    186,856.43x = 280,111.93 × 74,509.31
  4. Step 4: Simplify right side
    186,856.43x = 20,870,947,141.07
  5. Step 5: Solve for x
    x = 20,870,947,141.07/186,856.43
  6. Step 6: Final answer
    x = 111,695.10

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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.