Home / 100,091.16-138,175.81-57,641.49

Finding the Fourth Proportional to 100,091.16, 138,175.81 and 57,641.49

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Solution

The fourth proportional to 100,091.16, 138,175.81 and 57,641.49 is: 79,574.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,091.16 : 138,175.81 = 57,641.49 : x
  2. Step 2: Convert to fraction form
    100,091.16/138,175.81 = 57,641.49/x
  3. Step 3: Cross multiply
    100,091.16x = 138,175.81 × 57,641.49
  4. Step 4: Simplify right side
    100,091.16x = 7,964,659,426.25
  5. Step 5: Solve for x
    x = 7,964,659,426.25/100,091.16
  6. Step 6: Final answer
    x = 79,574.05

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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.