Home / 156,380.69-215,805.73-84,760.64

Finding the Fourth Proportional to 156,380.69, 215,805.73 and 84,760.64

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Solution

The fourth proportional to 156,380.69, 215,805.73 and 84,760.64 is: 116,969.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,380.69 : 215,805.73 = 84,760.64 : x
  2. Step 2: Convert to fraction form
    156,380.69/215,805.73 = 84,760.64/x
  3. Step 3: Cross multiply
    156,380.69x = 215,805.73 × 84,760.64
  4. Step 4: Simplify right side
    156,380.69x = 18,291,830,499.54
  5. Step 5: Solve for x
    x = 18,291,830,499.54/156,380.69
  6. Step 6: Final answer
    x = 116,969.88

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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.