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Finding the Fourth Proportional to 156,403.04, 215,836.04 and 84,782.43

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Solution

The fourth proportional to 156,403.04, 215,836.04 and 84,782.43 is: 116,999.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,403.04 : 215,836.04 = 84,782.43 : x
  2. Step 2: Convert to fraction form
    156,403.04/215,836.04 = 84,782.43/x
  3. Step 3: Cross multiply
    156,403.04x = 215,836.04 × 84,782.43
  4. Step 4: Simplify right side
    156,403.04x = 18,299,104,164.73
  5. Step 5: Solve for x
    x = 18,299,104,164.73/156,403.04
  6. Step 6: Final answer
    x = 116,999.67

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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.