Home / 135,342.81-186,768.32-74,913.57

Finding the Fourth Proportional to 135,342.81, 186,768.32 and 74,913.57

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Solution

The fourth proportional to 135,342.81, 186,768.32 and 74,913.57 is: 103,378.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,342.81 : 186,768.32 = 74,913.57 : x
  2. Step 2: Convert to fraction form
    135,342.81/186,768.32 = 74,913.57/x
  3. Step 3: Cross multiply
    135,342.81x = 186,768.32 × 74,913.57
  4. Step 4: Simplify right side
    135,342.81x = 13,991,481,239.53
  5. Step 5: Solve for x
    x = 13,991,481,239.53/135,342.81
  6. Step 6: Final answer
    x = 103,378.09

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1.5x scale

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.