Home / 156,609.30-216,120.98-84,989.33

Finding the Fourth Proportional to 156,609.30, 216,120.98 and 84,989.33

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Solution

The fourth proportional to 156,609.30, 216,120.98 and 84,989.33 is: 117,285.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,609.30 : 216,120.98 = 84,989.33 : x
  2. Step 2: Convert to fraction form
    156,609.30/216,120.98 = 84,989.33/x
  3. Step 3: Cross multiply
    156,609.30x = 216,120.98 × 84,989.33
  4. Step 4: Simplify right side
    156,609.30x = 18,367,977,231.47
  5. Step 5: Solve for x
    x = 18,367,977,231.47/156,609.30
  6. Step 6: Final answer
    x = 117,285.35

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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.