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Finding the Fourth Proportional to 133,655.42, 184,444.61 and 72,401.75

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Solution

The fourth proportional to 133,655.42, 184,444.61 and 72,401.75 is: 99,914.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,655.42 : 184,444.61 = 72,401.75 : x
  2. Step 2: Convert to fraction form
    133,655.42/184,444.61 = 72,401.75/x
  3. Step 3: Cross multiply
    133,655.42x = 184,444.61 × 72,401.75
  4. Step 4: Simplify right side
    133,655.42x = 13,354,111,257.84
  5. Step 5: Solve for x
    x = 13,354,111,257.84/133,655.42
  6. Step 6: Final answer
    x = 99,914.48

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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.