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Finding the Fourth Proportional to 180,939.78, 249,708.22 and 104,472.88

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Solution

The fourth proportional to 180,939.78, 249,708.22 and 104,472.88 is: 144,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,939.78 : 249,708.22 = 104,472.88 : x
  2. Step 2: Convert to fraction form
    180,939.78/249,708.22 = 104,472.88/x
  3. Step 3: Cross multiply
    180,939.78x = 249,708.22 × 104,472.88
  4. Step 4: Simplify right side
    180,939.78x = 26,087,736,903.07
  5. Step 5: Solve for x
    x = 26,087,736,903.07/180,939.78
  6. Step 6: Final answer
    x = 144,179.11

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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.