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Finding the Fourth Proportional to 191,940.20, 287,543.10 and 103,164.20

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Solution

The fourth proportional to 191,940.20, 287,543.10 and 103,164.20 is: 154,548.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,940.20 : 287,543.10 = 103,164.20 : x
  2. Step 2: Convert to fraction form
    191,940.20/287,543.10 = 103,164.20/x
  3. Step 3: Cross multiply
    191,940.20x = 287,543.10 × 103,164.20
  4. Step 4: Simplify right side
    191,940.20x = 29,664,153,877.02
  5. Step 5: Solve for x
    x = 29,664,153,877.02/191,940.20
  6. Step 6: Final answer
    x = 154,548.94

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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.