Home / 156,065.40-215,369.82-84,446.64

Finding the Fourth Proportional to 156,065.40, 215,369.82 and 84,446.64

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Solution

The fourth proportional to 156,065.40, 215,369.82 and 84,446.64 is: 116,536.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,065.40 : 215,369.82 = 84,446.64 : x
  2. Step 2: Convert to fraction form
    156,065.40/215,369.82 = 84,446.64/x
  3. Step 3: Cross multiply
    156,065.40x = 215,369.82 × 84,446.64
  4. Step 4: Simplify right side
    156,065.40x = 18,187,257,656.40
  5. Step 5: Solve for x
    x = 18,187,257,656.40/156,065.40
  6. Step 6: Final answer
    x = 116,536.13

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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.