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Finding the Fourth Proportional to 156,359.48, 215,776.01 and 84,739.49

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Solution

The fourth proportional to 156,359.48, 215,776.01 and 84,739.49 is: 116,940.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,359.48 : 215,776.01 = 84,739.49 : x
  2. Step 2: Convert to fraction form
    156,359.48/215,776.01 = 84,739.49/x
  3. Step 3: Cross multiply
    156,359.48x = 215,776.01 × 84,739.49
  4. Step 4: Simplify right side
    156,359.48x = 18,284,747,539.06
  5. Step 5: Solve for x
    x = 18,284,747,539.06/156,359.48
  6. Step 6: Final answer
    x = 116,940.45

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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.