Home / 135,731.69-187,332.22-75,321.74

Finding the Fourth Proportional to 135,731.69, 187,332.22 and 75,321.74

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Solution

The fourth proportional to 135,731.69, 187,332.22 and 75,321.74 is: 103,956.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,731.69 : 187,332.22 = 75,321.74 : x
  2. Step 2: Convert to fraction form
    135,731.69/187,332.22 = 75,321.74/x
  3. Step 3: Cross multiply
    135,731.69x = 187,332.22 × 75,321.74
  4. Step 4: Simplify right side
    135,731.69x = 14,110,187,853.52
  5. Step 5: Solve for x
    x = 14,110,187,853.52/135,731.69
  6. Step 6: Final answer
    x = 103,956.47

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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.