Home / 156,380.07-215,805.64-84,760.60

Finding the Fourth Proportional to 156,380.07, 215,805.64 and 84,760.60

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Solution

The fourth proportional to 156,380.07, 215,805.64 and 84,760.60 is: 116,970.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,380.07 : 215,805.64 = 84,760.60 : x
  2. Step 2: Convert to fraction form
    156,380.07/215,805.64 = 84,760.60/x
  3. Step 3: Cross multiply
    156,380.07x = 215,805.64 × 84,760.60
  4. Step 4: Simplify right side
    156,380.07x = 18,291,816,187.27
  5. Step 5: Solve for x
    x = 18,291,816,187.27/156,380.07
  6. Step 6: Final answer
    x = 116,970.25

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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.