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Finding the Fourth Proportional to 180,766.34, 249,472.49 and 100,219.13

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Solution

The fourth proportional to 180,766.34, 249,472.49 and 100,219.13 is: 138,310.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,766.34 : 249,472.49 = 100,219.13 : x
  2. Step 2: Convert to fraction form
    180,766.34/249,472.49 = 100,219.13/x
  3. Step 3: Cross multiply
    180,766.34x = 249,472.49 × 100,219.13
  4. Step 4: Simplify right side
    180,766.34x = 25,001,915,405.64
  5. Step 5: Solve for x
    x = 25,001,915,405.64/180,766.34
  6. Step 6: Final answer
    x = 138,310.68

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1.5x scale

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.