Home / 134,786.40-186,004.70-74,360.81

Finding the Fourth Proportional to 134,786.40, 186,004.70 and 74,360.81

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Solution

The fourth proportional to 134,786.40, 186,004.70 and 74,360.81 is: 102,617.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,786.40 : 186,004.70 = 74,360.81 : x
  2. Step 2: Convert to fraction form
    134,786.40/186,004.70 = 74,360.81/x
  3. Step 3: Cross multiply
    134,786.40x = 186,004.70 × 74,360.81
  4. Step 4: Simplify right side
    134,786.40x = 13,831,458,853.98
  5. Step 5: Solve for x
    x = 13,831,458,853.98/134,786.40
  6. Step 6: Final answer
    x = 102,617.61

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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.