Home / 136,744.37-188,726.25-76,318.90

Finding the Fourth Proportional to 136,744.37, 188,726.25 and 76,318.90

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Solution

The fourth proportional to 136,744.37, 188,726.25 and 76,318.90 is: 105,330.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,744.37 : 188,726.25 = 76,318.90 : x
  2. Step 2: Convert to fraction form
    136,744.37/188,726.25 = 76,318.90/x
  3. Step 3: Cross multiply
    136,744.37x = 188,726.25 × 76,318.90
  4. Step 4: Simplify right side
    136,744.37x = 14,403,378,475.90
  5. Step 5: Solve for x
    x = 14,403,378,475.90/136,744.37
  6. Step 6: Final answer
    x = 105,330.69

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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.