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Finding the Fourth Proportional to 156,059.81, 215,361 and 84,438.26

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Solution

The fourth proportional to 156,059.81, 215,361 and 84,438.26 is: 116,523.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,059.81 : 215,361 = 84,438.26 : x
  2. Step 2: Convert to fraction form
    156,059.81/215,361 = 84,438.26/x
  3. Step 3: Cross multiply
    156,059.81x = 215,361 × 84,438.26
  4. Step 4: Simplify right side
    156,059.81x = 18,184,707,035.06
  5. Step 5: Solve for x
    x = 18,184,707,035.06/156,059.81
  6. Step 6: Final answer
    x = 116,523.96

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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.