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Finding the Fourth Proportional to 147,600.69, 203,674.19 and 86,337.87

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Solution

The fourth proportional to 147,600.69, 203,674.19 and 86,337.87 is: 119,137.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,600.69 : 203,674.19 = 86,337.87 : x
  2. Step 2: Convert to fraction form
    147,600.69/203,674.19 = 86,337.87/x
  3. Step 3: Cross multiply
    147,600.69x = 203,674.19 × 86,337.87
  4. Step 4: Simplify right side
    147,600.69x = 17,584,795,738.58
  5. Step 5: Solve for x
    x = 17,584,795,738.58/147,600.69
  6. Step 6: Final answer
    x = 119,137.63

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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.