Home / 180,961.76-249,725.52-100,389.44

Finding the Fourth Proportional to 180,961.76, 249,725.52 and 100,389.44

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Solution

The fourth proportional to 180,961.76, 249,725.52 and 100,389.44 is: 138,536.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,961.76 : 249,725.52 = 100,389.44 : x
  2. Step 2: Convert to fraction form
    180,961.76/249,725.52 = 100,389.44/x
  3. Step 3: Cross multiply
    180,961.76x = 249,725.52 × 100,389.44
  4. Step 4: Simplify right side
    180,961.76x = 25,069,805,106.51
  5. Step 5: Solve for x
    x = 25,069,805,106.51/180,961.76
  6. Step 6: Final answer
    x = 138,536.48

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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.