Home / 128,429.54-177,246.10-73,983.60

Finding the Fourth Proportional to 128,429.54, 177,246.10 and 73,983.60

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Solution

The fourth proportional to 128,429.54, 177,246.10 and 73,983.60 is: 102,105.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,429.54 : 177,246.10 = 73,983.60 : x
  2. Step 2: Convert to fraction form
    128,429.54/177,246.10 = 73,983.60/x
  3. Step 3: Cross multiply
    128,429.54x = 177,246.10 × 73,983.60
  4. Step 4: Simplify right side
    128,429.54x = 13,113,304,563.96
  5. Step 5: Solve for x
    x = 13,113,304,563.96/128,429.54
  6. Step 6: Final answer
    x = 102,105.05

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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.