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Finding the Fourth Proportional to 156,059.31, 215,360.31 and 84,437.76

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Solution

The fourth proportional to 156,059.31, 215,360.31 and 84,437.76 is: 116,523.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,059.31 : 215,360.31 = 84,437.76 : x
  2. Step 2: Convert to fraction form
    156,059.31/215,360.31 = 84,437.76/x
  3. Step 3: Cross multiply
    156,059.31x = 215,360.31 × 84,437.76
  4. Step 4: Simplify right side
    156,059.31x = 18,184,542,169.31
  5. Step 5: Solve for x
    x = 18,184,542,169.31/156,059.31
  6. Step 6: Final answer
    x = 116,523.28

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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.