Home / 136,913.09-188,933.31-76,471.70

Finding the Fourth Proportional to 136,913.09, 188,933.31 and 76,471.70

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Solution

The fourth proportional to 136,913.09, 188,933.31 and 76,471.70 is: 105,527.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,913.09 : 188,933.31 = 76,471.70 : x
  2. Step 2: Convert to fraction form
    136,913.09/188,933.31 = 76,471.70/x
  3. Step 3: Cross multiply
    136,913.09x = 188,933.31 × 76,471.70
  4. Step 4: Simplify right side
    136,913.09x = 14,448,050,457.66
  5. Step 5: Solve for x
    x = 14,448,050,457.66/136,913.09
  6. Step 6: Final answer
    x = 105,527.17

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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.