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Finding the Fourth Proportional to 156,182.64, 215,532 and 84,563.28

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Solution

The fourth proportional to 156,182.64, 215,532 and 84,563.28 is: 116,697.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,182.64 : 215,532 = 84,563.28 : x
  2. Step 2: Convert to fraction form
    156,182.64/215,532 = 84,563.28/x
  3. Step 3: Cross multiply
    156,182.64x = 215,532 × 84,563.28
  4. Step 4: Simplify right side
    156,182.64x = 18,226,092,864.96
  5. Step 5: Solve for x
    x = 18,226,092,864.96/156,182.64
  6. Step 6: Final answer
    x = 116,697.30

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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.