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Finding the Fourth Proportional to 133,936, 184,831.68 and 74,320

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Solution

The fourth proportional to 133,936, 184,831.68 and 74,320 is: 102,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,936 : 184,831.68 = 74,320 : x
  2. Step 2: Convert to fraction form
    133,936/184,831.68 = 74,320/x
  3. Step 3: Cross multiply
    133,936x = 184,831.68 × 74,320
  4. Step 4: Simplify right side
    133,936x = 13,736,690,457.60
  5. Step 5: Solve for x
    x = 13,736,690,457.60/133,936
  6. Step 6: Final answer
    x = 102,561.60

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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.