Home / 137,983.78-190,433.39-76,736.07

Finding the Fourth Proportional to 137,983.78, 190,433.39 and 76,736.07

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Solution

The fourth proportional to 137,983.78, 190,433.39 and 76,736.07 is: 105,904.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,983.78 : 190,433.39 = 76,736.07 : x
  2. Step 2: Convert to fraction form
    137,983.78/190,433.39 = 76,736.07/x
  3. Step 3: Cross multiply
    137,983.78x = 190,433.39 × 76,736.07
  4. Step 4: Simplify right side
    137,983.78x = 14,613,109,945.38
  5. Step 5: Solve for x
    x = 14,613,109,945.38/137,983.78
  6. Step 6: Final answer
    x = 105,904.55

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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.