Home / 156,442.30-215,891.40-84,823.42

Finding the Fourth Proportional to 156,442.30, 215,891.40 and 84,823.42

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Solution

The fourth proportional to 156,442.30, 215,891.40 and 84,823.42 is: 117,056.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,442.30 : 215,891.40 = 84,823.42 : x
  2. Step 2: Convert to fraction form
    156,442.30/215,891.40 = 84,823.42/x
  3. Step 3: Cross multiply
    156,442.30x = 215,891.40 × 84,823.42
  4. Step 4: Simplify right side
    156,442.30x = 18,312,646,896.59
  5. Step 5: Solve for x
    x = 18,312,646,896.59/156,442.30
  6. Step 6: Final answer
    x = 117,056.88

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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.