Home / 156,929.76-216,563.04-85,309.56

Finding the Fourth Proportional to 156,929.76, 216,563.04 and 85,309.56

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Solution

The fourth proportional to 156,929.76, 216,563.04 and 85,309.56 is: 117,727.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.76 : 216,563.04 = 85,309.56 : x
  2. Step 2: Convert to fraction form
    156,929.76/216,563.04 = 85,309.56/x
  3. Step 3: Cross multiply
    156,929.76x = 216,563.04 × 85,309.56
  4. Step 4: Simplify right side
    156,929.76x = 18,474,897,654.66
  5. Step 5: Solve for x
    x = 18,474,897,654.66/156,929.76
  6. Step 6: Final answer
    x = 117,727.18

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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.