Home / 133,108.22-183,687.94-72,678.68

Finding the Fourth Proportional to 133,108.22, 183,687.94 and 72,678.68

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Solution

The fourth proportional to 133,108.22, 183,687.94 and 72,678.68 is: 100,295.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,108.22 : 183,687.94 = 72,678.68 : x
  2. Step 2: Convert to fraction form
    133,108.22/183,687.94 = 72,678.68/x
  3. Step 3: Cross multiply
    133,108.22x = 183,687.94 × 72,678.68
  4. Step 4: Simplify right side
    133,108.22x = 13,350,197,011.12
  5. Step 5: Solve for x
    x = 13,350,197,011.12/133,108.22
  6. Step 6: Final answer
    x = 100,295.81

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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.