Home / 128,795.64-177,816.78-102,046.20

Finding the Fourth Proportional to 128,795.64, 177,816.78 and 102,046.20

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Solution

The fourth proportional to 128,795.64, 177,816.78 and 102,046.20 is: 140,886.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,795.64 : 177,816.78 = 102,046.20 : x
  2. Step 2: Convert to fraction form
    128,795.64/177,816.78 = 102,046.20/x
  3. Step 3: Cross multiply
    128,795.64x = 177,816.78 × 102,046.20
  4. Step 4: Simplify right side
    128,795.64x = 18,145,526,695.24
  5. Step 5: Solve for x
    x = 18,145,526,695.24/128,795.64
  6. Step 6: Final answer
    x = 140,886.19

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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.