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Finding the Fourth Proportional to 128,374.74, 177,097.45 and 83,067.34

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Solution

The fourth proportional to 128,374.74, 177,097.45 and 83,067.34 is: 114,594.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,374.74 : 177,097.45 = 83,067.34 : x
  2. Step 2: Convert to fraction form
    128,374.74/177,097.45 = 83,067.34/x
  3. Step 3: Cross multiply
    128,374.74x = 177,097.45 × 83,067.34
  4. Step 4: Simplify right side
    128,374.74x = 14,711,014,092.28
  5. Step 5: Solve for x
    x = 14,711,014,092.28/128,374.74
  6. Step 6: Final answer
    x = 114,594.30

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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.