Home / 136,918.28-188,933.64-76,487.62

Finding the Fourth Proportional to 136,918.28, 188,933.64 and 76,487.62

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Solution

The fourth proportional to 136,918.28, 188,933.64 and 76,487.62 is: 105,545.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,918.28 : 188,933.64 = 76,487.62 : x
  2. Step 2: Convert to fraction form
    136,918.28/188,933.64 = 76,487.62/x
  3. Step 3: Cross multiply
    136,918.28x = 188,933.64 × 76,487.62
  4. Step 4: Simplify right side
    136,918.28x = 14,451,084,461.54
  5. Step 5: Solve for x
    x = 14,451,084,461.54/136,918.28
  6. Step 6: Final answer
    x = 105,545.33

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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.