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Finding the Fourth Proportional to 191,903.62, 287,382.37 and 120,649.49

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Solution

The fourth proportional to 191,903.62, 287,382.37 and 120,649.49 is: 180,676.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,903.62 : 287,382.37 = 120,649.49 : x
  2. Step 2: Convert to fraction form
    191,903.62/287,382.37 = 120,649.49/x
  3. Step 3: Cross multiply
    191,903.62x = 287,382.37 × 120,649.49
  4. Step 4: Simplify right side
    191,903.62x = 34,672,534,636.96
  5. Step 5: Solve for x
    x = 34,672,534,636.96/191,903.62
  6. Step 6: Final answer
    x = 180,676.82

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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.