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Finding the Fourth Proportional to 156,160.82, 215,502.01 and 84,540.84

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Solution

The fourth proportional to 156,160.82, 215,502.01 and 84,540.84 is: 116,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,160.82 : 215,502.01 = 84,540.84 : x
  2. Step 2: Convert to fraction form
    156,160.82/215,502.01 = 84,540.84/x
  3. Step 3: Cross multiply
    156,160.82x = 215,502.01 × 84,540.84
  4. Step 4: Simplify right side
    156,160.82x = 18,218,720,947.09
  5. Step 5: Solve for x
    x = 18,218,720,947.09/156,160.82
  6. Step 6: Final answer
    x = 116,666.40

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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.