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Finding the Fourth Proportional to 180,958.58, 249,722.55 and 100,398.38

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Solution

The fourth proportional to 180,958.58, 249,722.55 and 100,398.38 is: 138,549.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,958.58 : 249,722.55 = 100,398.38 : x
  2. Step 2: Convert to fraction form
    180,958.58/249,722.55 = 100,398.38/x
  3. Step 3: Cross multiply
    180,958.58x = 249,722.55 × 100,398.38
  4. Step 4: Simplify right side
    180,958.58x = 25,071,739,469.47
  5. Step 5: Solve for x
    x = 25,071,739,469.47/180,958.58
  6. Step 6: Final answer
    x = 138,549.60

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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.