Home / 156,261.84-215,640.12-84,641.04

Finding the Fourth Proportional to 156,261.84, 215,640.12 and 84,641.04

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Solution

The fourth proportional to 156,261.84, 215,640.12 and 84,641.04 is: 116,803.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,261.84 : 215,640.12 = 84,641.04 : x
  2. Step 2: Convert to fraction form
    156,261.84/215,640.12 = 84,641.04/x
  3. Step 3: Cross multiply
    156,261.84x = 215,640.12 × 84,641.04
  4. Step 4: Simplify right side
    156,261.84x = 18,252,004,022.52
  5. Step 5: Solve for x
    x = 18,252,004,022.52/156,261.84
  6. Step 6: Final answer
    x = 116,803.97

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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.