Home / 100,196.11-138,270.81-54,256.25

Finding the Fourth Proportional to 100,196.11, 138,270.81 and 54,256.25

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Solution

The fourth proportional to 100,196.11, 138,270.81 and 54,256.25 is: 74,873.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,196.11 : 138,270.81 = 54,256.25 : x
  2. Step 2: Convert to fraction form
    100,196.11/138,270.81 = 54,256.25/x
  3. Step 3: Cross multiply
    100,196.11x = 138,270.81 × 54,256.25
  4. Step 4: Simplify right side
    100,196.11x = 7,502,055,635.06
  5. Step 5: Solve for x
    x = 7,502,055,635.06/100,196.11
  6. Step 6: Final answer
    x = 74,873.72

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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.