Home / 186,865.20-279,641.70-127,816.20

Finding the Fourth Proportional to 186,865.20, 279,641.70 and 127,816.20

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Solution

The fourth proportional to 186,865.20, 279,641.70 and 127,816.20 is: 191,275.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,865.20 : 279,641.70 = 127,816.20 : x
  2. Step 2: Convert to fraction form
    186,865.20/279,641.70 = 127,816.20/x
  3. Step 3: Cross multiply
    186,865.20x = 279,641.70 × 127,816.20
  4. Step 4: Simplify right side
    186,865.20x = 35,742,739,455.54
  5. Step 5: Solve for x
    x = 35,742,739,455.54/186,865.20
  6. Step 6: Final answer
    x = 191,275.53

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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.