Home / 180,935.78-249,721.26-100,389.26

Finding the Fourth Proportional to 180,935.78, 249,721.26 and 100,389.26

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Solution

The fourth proportional to 180,935.78, 249,721.26 and 100,389.26 is: 138,553.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,935.78 : 249,721.26 = 100,389.26 : x
  2. Step 2: Convert to fraction form
    180,935.78/249,721.26 = 100,389.26/x
  3. Step 3: Cross multiply
    180,935.78x = 249,721.26 × 100,389.26
  4. Step 4: Simplify right side
    180,935.78x = 25,069,332,497.67
  5. Step 5: Solve for x
    x = 25,069,332,497.67/180,935.78
  6. Step 6: Final answer
    x = 138,553.76

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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.