Home / 133,129.28-183,716.96-72,699.74

Finding the Fourth Proportional to 133,129.28, 183,716.96 and 72,699.74

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Solution

The fourth proportional to 133,129.28, 183,716.96 and 72,699.74 is: 100,324.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,129.28 : 183,716.96 = 72,699.74 : x
  2. Step 2: Convert to fraction form
    133,129.28/183,716.96 = 72,699.74/x
  3. Step 3: Cross multiply
    133,129.28x = 183,716.96 × 72,699.74
  4. Step 4: Simplify right side
    133,129.28x = 13,356,175,225.59
  5. Step 5: Solve for x
    x = 13,356,175,225.59/133,129.28
  6. Step 6: Final answer
    x = 100,324.85

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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.