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Finding the Fourth Proportional to 180,937.89, 249,695.87 and 100,372.05

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Solution

The fourth proportional to 180,937.89, 249,695.87 and 100,372.05 is: 138,514.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,937.89 : 249,695.87 = 100,372.05 : x
  2. Step 2: Convert to fraction form
    180,937.89/249,695.87 = 100,372.05/x
  3. Step 3: Cross multiply
    180,937.89x = 249,695.87 × 100,372.05
  4. Step 4: Simplify right side
    180,937.89x = 25,062,485,846.57
  5. Step 5: Solve for x
    x = 25,062,485,846.57/180,937.89
  6. Step 6: Final answer
    x = 138,514.30

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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.