Home / 133,126.49-183,716.08-72,697.86

Finding the Fourth Proportional to 133,126.49, 183,716.08 and 72,697.86

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Solution

The fourth proportional to 133,126.49, 183,716.08 and 72,697.86 is: 100,323.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,126.49 : 183,716.08 = 72,697.86 : x
  2. Step 2: Convert to fraction form
    133,126.49/183,716.08 = 72,697.86/x
  3. Step 3: Cross multiply
    133,126.49x = 183,716.08 × 72,697.86
  4. Step 4: Simplify right side
    133,126.49x = 13,355,765,681.84
  5. Step 5: Solve for x
    x = 13,355,765,681.84/133,126.49
  6. Step 6: Final answer
    x = 100,323.88

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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.