Home / 156,380.82-215,805.90-84,760.76

Finding the Fourth Proportional to 156,380.82, 215,805.90 and 84,760.76

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Solution

The fourth proportional to 156,380.82, 215,805.90 and 84,760.76 is: 116,970.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,380.82 : 215,805.90 = 84,760.76 : x
  2. Step 2: Convert to fraction form
    156,380.82/215,805.90 = 84,760.76/x
  3. Step 3: Cross multiply
    156,380.82x = 215,805.90 × 84,760.76
  4. Step 4: Simplify right side
    156,380.82x = 18,291,872,096.48
  5. Step 5: Solve for x
    x = 18,291,872,096.48/156,380.82
  6. Step 6: Final answer
    x = 116,970.05

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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.