Home / 135,953.81-187,638.73-113,256.85

Finding the Fourth Proportional to 135,953.81, 187,638.73 and 113,256.85

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Solution

The fourth proportional to 135,953.81, 187,638.73 and 113,256.85 is: 156,313.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,953.81 : 187,638.73 = 113,256.85 : x
  2. Step 2: Convert to fraction form
    135,953.81/187,638.73 = 113,256.85/x
  3. Step 3: Cross multiply
    135,953.81x = 187,638.73 × 113,256.85
  4. Step 4: Simplify right side
    135,953.81x = 21,251,371,097.38
  5. Step 5: Solve for x
    x = 21,251,371,097.38/135,953.81
  6. Step 6: Final answer
    x = 156,313.17

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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.