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Finding the Fourth Proportional to 156,213.84, 215,574.79 and 84,593.64

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Solution

The fourth proportional to 156,213.84, 215,574.79 and 84,593.64 is: 116,739.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,213.84 : 215,574.79 = 84,593.64 : x
  2. Step 2: Convert to fraction form
    156,213.84/215,574.79 = 84,593.64/x
  3. Step 3: Cross multiply
    156,213.84x = 215,574.79 × 84,593.64
  4. Step 4: Simplify right side
    156,213.84x = 18,236,256,178.34
  5. Step 5: Solve for x
    x = 18,236,256,178.34/156,213.84
  6. Step 6: Final answer
    x = 116,739.06

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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.