Home / 156,140.64-215,474-84,521.24

Finding the Fourth Proportional to 156,140.64, 215,474 and 84,521.24

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Solution

The fourth proportional to 156,140.64, 215,474 and 84,521.24 is: 116,639.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,140.64 : 215,474 = 84,521.24 : x
  2. Step 2: Convert to fraction form
    156,140.64/215,474 = 84,521.24/x
  3. Step 3: Cross multiply
    156,140.64x = 215,474 × 84,521.24
  4. Step 4: Simplify right side
    156,140.64x = 18,212,129,667.76
  5. Step 5: Solve for x
    x = 18,212,129,667.76/156,140.64
  6. Step 6: Final answer
    x = 116,639.27

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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.