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Finding the Fourth Proportional to 156,365.98, 215,779.26 and 84,744.47

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Solution

The fourth proportional to 156,365.98, 215,779.26 and 84,744.47 is: 116,944.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,365.98 : 215,779.26 = 84,744.47 : x
  2. Step 2: Convert to fraction form
    156,365.98/215,779.26 = 84,744.47/x
  3. Step 3: Cross multiply
    156,365.98x = 215,779.26 × 84,744.47
  4. Step 4: Simplify right side
    156,365.98x = 18,286,099,025.69
  5. Step 5: Solve for x
    x = 18,286,099,025.69/156,365.98
  6. Step 6: Final answer
    x = 116,944.23

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1.5x scale

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.