Home / 156,930.10-216,565.41-85,308.58

Finding the Fourth Proportional to 156,930.10, 216,565.41 and 85,308.58

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Solution

The fourth proportional to 156,930.10, 216,565.41 and 85,308.58 is: 117,726.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.10 : 216,565.41 = 85,308.58 : x
  2. Step 2: Convert to fraction form
    156,930.10/216,565.41 = 85,308.58/x
  3. Step 3: Cross multiply
    156,930.10x = 216,565.41 × 85,308.58
  4. Step 4: Simplify right side
    156,930.10x = 18,474,887,604.22
  5. Step 5: Solve for x
    x = 18,474,887,604.22/156,930.10
  6. Step 6: Final answer
    x = 117,726.86

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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.