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Finding the Fourth Proportional to 180,920.55, 249,700.25 and 100,374.02

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Solution

The fourth proportional to 180,920.55, 249,700.25 and 100,374.02 is: 138,532.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,920.55 : 249,700.25 = 100,374.02 : x
  2. Step 2: Convert to fraction form
    180,920.55/249,700.25 = 100,374.02/x
  3. Step 3: Cross multiply
    180,920.55x = 249,700.25 × 100,374.02
  4. Step 4: Simplify right side
    180,920.55x = 25,063,419,230.88
  5. Step 5: Solve for x
    x = 25,063,419,230.88/180,920.55
  6. Step 6: Final answer
    x = 138,532.74

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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.