Home / 136,857.38-188,859.51-76,426.34

Finding the Fourth Proportional to 136,857.38, 188,859.51 and 76,426.34

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Solution

The fourth proportional to 136,857.38, 188,859.51 and 76,426.34 is: 105,466.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,857.38 : 188,859.51 = 76,426.34 : x
  2. Step 2: Convert to fraction form
    136,857.38/188,859.51 = 76,426.34/x
  3. Step 3: Cross multiply
    136,857.38x = 188,859.51 × 76,426.34
  4. Step 4: Simplify right side
    136,857.38x = 14,433,840,179.20
  5. Step 5: Solve for x
    x = 14,433,840,179.20/136,857.38
  6. Step 6: Final answer
    x = 105,466.29

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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.