Home / 135,301.81-186,713.70-74,872.41

Finding the Fourth Proportional to 135,301.81, 186,713.70 and 74,872.41

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Solution

The fourth proportional to 135,301.81, 186,713.70 and 74,872.41 is: 103,322.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,301.81 : 186,713.70 = 74,872.41 : x
  2. Step 2: Convert to fraction form
    135,301.81/186,713.70 = 74,872.41/x
  3. Step 3: Cross multiply
    135,301.81x = 186,713.70 × 74,872.41
  4. Step 4: Simplify right side
    135,301.81x = 13,979,704,699.02
  5. Step 5: Solve for x
    x = 13,979,704,699.02/135,301.81
  6. Step 6: Final answer
    x = 103,322.38

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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.