Home / 138,273.20-190,814.28-80,946.32

Finding the Fourth Proportional to 138,273.20, 190,814.28 and 80,946.32

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Solution

The fourth proportional to 138,273.20, 190,814.28 and 80,946.32 is: 111,704.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,273.20 : 190,814.28 = 80,946.32 : x
  2. Step 2: Convert to fraction form
    138,273.20/190,814.28 = 80,946.32/x
  3. Step 3: Cross multiply
    138,273.20x = 190,814.28 × 80,946.32
  4. Step 4: Simplify right side
    138,273.20x = 15,445,713,769.45
  5. Step 5: Solve for x
    x = 15,445,713,769.45/138,273.20
  6. Step 6: Final answer
    x = 111,704.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.