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Finding the Fourth Proportional to 128,293.63, 177,039.63 and 70,149.29

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Solution

The fourth proportional to 128,293.63, 177,039.63 and 70,149.29 is: 96,802.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,293.63 : 177,039.63 = 70,149.29 : x
  2. Step 2: Convert to fraction form
    128,293.63/177,039.63 = 70,149.29/x
  3. Step 3: Cross multiply
    128,293.63x = 177,039.63 × 70,149.29
  4. Step 4: Simplify right side
    128,293.63x = 12,419,204,346.36
  5. Step 5: Solve for x
    x = 12,419,204,346.36/128,293.63
  6. Step 6: Final answer
    x = 96,802.97

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1.5x scale

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.