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Finding the Fourth Proportional to 180,916.79, 249,680.48 and 100,370.25

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Solution

The fourth proportional to 180,916.79, 249,680.48 and 100,370.25 is: 138,519.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,916.79 : 249,680.48 = 100,370.25 : x
  2. Step 2: Convert to fraction form
    180,916.79/249,680.48 = 100,370.25/x
  3. Step 3: Cross multiply
    180,916.79x = 249,680.48 × 100,370.25
  4. Step 4: Simplify right side
    180,916.79x = 25,060,491,695.87
  5. Step 5: Solve for x
    x = 25,060,491,695.87/180,916.79
  6. Step 6: Final answer
    x = 138,519.44

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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.