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Finding the Fourth Proportional to 113,622.44, 156,812.70 and 65,877.80

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Solution

The fourth proportional to 113,622.44, 156,812.70 and 65,877.80 is: 90,919.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,622.44 : 156,812.70 = 65,877.80 : x
  2. Step 2: Convert to fraction form
    113,622.44/156,812.70 = 65,877.80/x
  3. Step 3: Cross multiply
    113,622.44x = 156,812.70 × 65,877.80
  4. Step 4: Simplify right side
    113,622.44x = 10,330,474,904.00
  5. Step 5: Solve for x
    x = 10,330,474,904.00/113,622.44
  6. Step 6: Final answer
    x = 90,919.32

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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.