Home / 133,127.78-183,716.67-72,698.90

Finding the Fourth Proportional to 133,127.78, 183,716.67 and 72,698.90

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Solution

The fourth proportional to 133,127.78, 183,716.67 and 72,698.90 is: 100,324.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,127.78 : 183,716.67 = 72,698.90 : x
  2. Step 2: Convert to fraction form
    133,127.78/183,716.67 = 72,698.90/x
  3. Step 3: Cross multiply
    133,127.78x = 183,716.67 × 72,698.90
  4. Step 4: Simplify right side
    133,127.78x = 13,355,999,820.66
  5. Step 5: Solve for x
    x = 13,355,999,820.66/133,127.78
  6. Step 6: Final answer
    x = 100,324.66

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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.