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Finding the Fourth Proportional to 156,114.88, 215,436.84 and 84,493.36

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Solution

The fourth proportional to 156,114.88, 215,436.84 and 84,493.36 is: 116,599.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,114.88 : 215,436.84 = 84,493.36 : x
  2. Step 2: Convert to fraction form
    156,114.88/215,436.84 = 84,493.36/x
  3. Step 3: Cross multiply
    156,114.88x = 215,436.84 × 84,493.36
  4. Step 4: Simplify right side
    156,114.88x = 18,202,982,479.38
  5. Step 5: Solve for x
    x = 18,202,982,479.38/156,114.88
  6. Step 6: Final answer
    x = 116,599.92

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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.