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Finding the Fourth Proportional to 249,676.71, 374,550.60 and 81,142.85

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Solution

The fourth proportional to 249,676.71, 374,550.60 and 81,142.85 is: 121,725.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,676.71 : 374,550.60 = 81,142.85 : x
  2. Step 2: Convert to fraction form
    249,676.71/374,550.60 = 81,142.85/x
  3. Step 3: Cross multiply
    249,676.71x = 374,550.60 × 81,142.85
  4. Step 4: Simplify right side
    249,676.71x = 30,392,101,280.46
  5. Step 5: Solve for x
    x = 30,392,101,280.46/249,676.71
  6. Step 6: Final answer
    x = 121,725.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.