Home / 156,015.13-215,300.71-84,394.98

Finding the Fourth Proportional to 156,015.13, 215,300.71 and 84,394.98

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Solution

The fourth proportional to 156,015.13, 215,300.71 and 84,394.98 is: 116,464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,015.13 : 215,300.71 = 84,394.98 : x
  2. Step 2: Convert to fraction form
    156,015.13/215,300.71 = 84,394.98/x
  3. Step 3: Cross multiply
    156,015.13x = 215,300.71 × 84,394.98
  4. Step 4: Simplify right side
    156,015.13x = 18,170,297,615.96
  5. Step 5: Solve for x
    x = 18,170,297,615.96/156,015.13
  6. Step 6: Final answer
    x = 116,464.97

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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.