Home / 138,048.74-190,505.44-76,794.32

Finding the Fourth Proportional to 138,048.74, 190,505.44 and 76,794.32

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Solution

The fourth proportional to 138,048.74, 190,505.44 and 76,794.32 is: 105,975.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,048.74 : 190,505.44 = 76,794.32 : x
  2. Step 2: Convert to fraction form
    138,048.74/190,505.44 = 76,794.32/x
  3. Step 3: Cross multiply
    138,048.74x = 190,505.44 × 76,794.32
  4. Step 4: Simplify right side
    138,048.74x = 14,629,735,721.10
  5. Step 5: Solve for x
    x = 14,629,735,721.10/138,048.74
  6. Step 6: Final answer
    x = 105,975.15

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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.