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Finding the Fourth Proportional to 133,378.16, 184,054.32 and 72,936.80

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Solution

The fourth proportional to 133,378.16, 184,054.32 and 72,936.80 is: 100,648.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,378.16 : 184,054.32 = 72,936.80 : x
  2. Step 2: Convert to fraction form
    133,378.16/184,054.32 = 72,936.80/x
  3. Step 3: Cross multiply
    133,378.16x = 184,054.32 × 72,936.80
  4. Step 4: Simplify right side
    133,378.16x = 13,424,333,126.98
  5. Step 5: Solve for x
    x = 13,424,333,126.98/133,378.16
  6. Step 6: Final answer
    x = 100,648.66

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1.5x scale

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.