Home / 133,143.86-183,739.78-75,780.36

Finding the Fourth Proportional to 133,143.86, 183,739.78 and 75,780.36

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Solution

The fourth proportional to 133,143.86, 183,739.78 and 75,780.36 is: 104,577.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,143.86 : 183,739.78 = 75,780.36 : x
  2. Step 2: Convert to fraction form
    133,143.86/183,739.78 = 75,780.36/x
  3. Step 3: Cross multiply
    133,143.86x = 183,739.78 × 75,780.36
  4. Step 4: Simplify right side
    133,143.86x = 13,923,866,674.72
  5. Step 5: Solve for x
    x = 13,923,866,674.72/133,143.86
  6. Step 6: Final answer
    x = 104,577.61

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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.