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Finding the Fourth Proportional to 191,583.02, 287,409.33 and 79,202.21

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Solution

The fourth proportional to 191,583.02, 287,409.33 and 79,202.21 is: 118,817.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,583.02 : 287,409.33 = 79,202.21 : x
  2. Step 2: Convert to fraction form
    191,583.02/287,409.33 = 79,202.21/x
  3. Step 3: Cross multiply
    191,583.02x = 287,409.33 × 79,202.21
  4. Step 4: Simplify right side
    191,583.02x = 22,763,452,673.57
  5. Step 5: Solve for x
    x = 22,763,452,673.57/191,583.02
  6. Step 6: Final answer
    x = 118,817.69

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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.