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Finding the Fourth Proportional to 180,578.61, 249,074.73 and 123,891.57

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Solution

The fourth proportional to 180,578.61, 249,074.73 and 123,891.57 is: 170,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,578.61 : 249,074.73 = 123,891.57 : x
  2. Step 2: Convert to fraction form
    180,578.61/249,074.73 = 123,891.57/x
  3. Step 3: Cross multiply
    180,578.61x = 249,074.73 × 123,891.57
  4. Step 4: Simplify right side
    180,578.61x = 30,858,259,347.03
  5. Step 5: Solve for x
    x = 30,858,259,347.03/180,578.61
  6. Step 6: Final answer
    x = 170,885.46

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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.