Home / 156,434.30-215,880.36-84,815.42

Finding the Fourth Proportional to 156,434.30, 215,880.36 and 84,815.42

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Solution

The fourth proportional to 156,434.30, 215,880.36 and 84,815.42 is: 117,045.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,434.30 : 215,880.36 = 84,815.42 : x
  2. Step 2: Convert to fraction form
    156,434.30/215,880.36 = 84,815.42/x
  3. Step 3: Cross multiply
    156,434.30x = 215,880.36 × 84,815.42
  4. Step 4: Simplify right side
    156,434.30x = 18,309,983,403.15
  5. Step 5: Solve for x
    x = 18,309,983,403.15/156,434.30
  6. Step 6: Final answer
    x = 117,045.84

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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.