Home / 135,175.81-186,535.05-74,742.82

Finding the Fourth Proportional to 135,175.81, 186,535.05 and 74,742.82

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Solution

The fourth proportional to 135,175.81, 186,535.05 and 74,742.82 is: 103,140.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,175.81 : 186,535.05 = 74,742.82 : x
  2. Step 2: Convert to fraction form
    135,175.81/186,535.05 = 74,742.82/x
  3. Step 3: Cross multiply
    135,175.81x = 186,535.05 × 74,742.82
  4. Step 4: Simplify right side
    135,175.81x = 13,942,155,665.84
  5. Step 5: Solve for x
    x = 13,942,155,665.84/135,175.81
  6. Step 6: Final answer
    x = 103,140.91

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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.