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Finding the Fourth Proportional to 161,898.54, 223,420.97 and 90,283.10

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Solution

The fourth proportional to 161,898.54, 223,420.97 and 90,283.10 is: 124,591.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,898.54 : 223,420.97 = 90,283.10 : x
  2. Step 2: Convert to fraction form
    161,898.54/223,420.97 = 90,283.10/x
  3. Step 3: Cross multiply
    161,898.54x = 223,420.97 × 90,283.10
  4. Step 4: Simplify right side
    161,898.54x = 20,171,137,325.19
  5. Step 5: Solve for x
    x = 20,171,137,325.19/161,898.54
  6. Step 6: Final answer
    x = 124,591.22

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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.