Home / 138,979.82-191,858.28-93,118.44

Finding the Fourth Proportional to 138,979.82, 191,858.28 and 93,118.44

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Solution

The fourth proportional to 138,979.82, 191,858.28 and 93,118.44 is: 128,547.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,979.82 : 191,858.28 = 93,118.44 : x
  2. Step 2: Convert to fraction form
    138,979.82/191,858.28 = 93,118.44/x
  3. Step 3: Cross multiply
    138,979.82x = 191,858.28 × 93,118.44
  4. Step 4: Simplify right side
    138,979.82x = 17,865,543,734.68
  5. Step 5: Solve for x
    x = 17,865,543,734.68/138,979.82
  6. Step 6: Final answer
    x = 128,547.75

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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.