Home / 186,109.40-279,077.70-80,874.20

Finding the Fourth Proportional to 186,109.40, 279,077.70 and 80,874.20

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Solution

The fourth proportional to 186,109.40, 279,077.70 and 80,874.20 is: 121,273.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,109.40 : 279,077.70 = 80,874.20 : x
  2. Step 2: Convert to fraction form
    186,109.40/279,077.70 = 80,874.20/x
  3. Step 3: Cross multiply
    186,109.40x = 279,077.70 × 80,874.20
  4. Step 4: Simplify right side
    186,109.40x = 22,570,185,725.34
  5. Step 5: Solve for x
    x = 22,570,185,725.34/186,109.40
  6. Step 6: Final answer
    x = 121,273.75

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1.5x scale

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.