Home / 135,863.28-187,182.91-105,130.70

Finding the Fourth Proportional to 135,863.28, 187,182.91 and 105,130.70

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Solution

The fourth proportional to 135,863.28, 187,182.91 and 105,130.70 is: 144,841.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,863.28 : 187,182.91 = 105,130.70 : x
  2. Step 2: Convert to fraction form
    135,863.28/187,182.91 = 105,130.70/x
  3. Step 3: Cross multiply
    135,863.28x = 187,182.91 × 105,130.70
  4. Step 4: Simplify right side
    135,863.28x = 19,678,670,356.34
  5. Step 5: Solve for x
    x = 19,678,670,356.34/135,863.28
  6. Step 6: Final answer
    x = 144,841.71

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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.