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Finding the Fourth Proportional to 180,790.88, 249,591.77 and 123,515.78

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Solution

The fourth proportional to 180,790.88, 249,591.77 and 123,515.78 is: 170,520.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,790.88 : 249,591.77 = 123,515.78 : x
  2. Step 2: Convert to fraction form
    180,790.88/249,591.77 = 123,515.78/x
  3. Step 3: Cross multiply
    180,790.88x = 249,591.77 × 123,515.78
  4. Step 4: Simplify right side
    180,790.88x = 30,828,520,287.59
  5. Step 5: Solve for x
    x = 30,828,520,287.59/180,790.88
  6. Step 6: Final answer
    x = 170,520.33

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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.