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Finding the Fourth Proportional to 156,107.07, 215,427.35 and 84,487.07

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Solution

The fourth proportional to 156,107.07, 215,427.35 and 84,487.07 is: 116,591.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,107.07 : 215,427.35 = 84,487.07 : x
  2. Step 2: Convert to fraction form
    156,107.07/215,427.35 = 84,487.07/x
  3. Step 3: Cross multiply
    156,107.07x = 215,427.35 × 84,487.07
  4. Step 4: Simplify right side
    156,107.07x = 18,200,824,099.79
  5. Step 5: Solve for x
    x = 18,200,824,099.79/156,107.07
  6. Step 6: Final answer
    x = 116,591.93

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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.