Home / 135,386.51-186,834.86-74,958.23

Finding the Fourth Proportional to 135,386.51, 186,834.86 and 74,958.23

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Solution

The fourth proportional to 135,386.51, 186,834.86 and 74,958.23 is: 103,443.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,386.51 : 186,834.86 = 74,958.23 : x
  2. Step 2: Convert to fraction form
    135,386.51/186,834.86 = 74,958.23/x
  3. Step 3: Cross multiply
    135,386.51x = 186,834.86 × 74,958.23
  4. Step 4: Simplify right side
    135,386.51x = 14,004,810,781.29
  5. Step 5: Solve for x
    x = 14,004,810,781.29/135,386.51
  6. Step 6: Final answer
    x = 103,443.18

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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.