Home / 113,731.02-156,898.05-65,956.68

Finding the Fourth Proportional to 113,731.02, 156,898.05 and 65,956.68

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Solution

The fourth proportional to 113,731.02, 156,898.05 and 65,956.68 is: 90,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,731.02 : 156,898.05 = 65,956.68 : x
  2. Step 2: Convert to fraction form
    113,731.02/156,898.05 = 65,956.68/x
  3. Step 3: Cross multiply
    113,731.02x = 156,898.05 × 65,956.68
  4. Step 4: Simplify right side
    113,731.02x = 10,348,474,146.69
  5. Step 5: Solve for x
    x = 10,348,474,146.69/113,731.02
  6. Step 6: Final answer
    x = 90,990.78

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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.