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Finding the Fourth Proportional to 102,792.64, 153,910.56 and 53,440.96

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Solution

The fourth proportional to 102,792.64, 153,910.56 and 53,440.96 is: 80,016.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,792.64 : 153,910.56 = 53,440.96 : x
  2. Step 2: Convert to fraction form
    102,792.64/153,910.56 = 53,440.96/x
  3. Step 3: Cross multiply
    102,792.64x = 153,910.56 × 53,440.96
  4. Step 4: Simplify right side
    102,792.64x = 8,225,128,080.54
  5. Step 5: Solve for x
    x = 8,225,128,080.54/102,792.64
  6. Step 6: Final answer
    x = 80,016.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.