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Finding the Fourth Proportional to 133,486.16, 184,021 and 90,990.16

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Solution

The fourth proportional to 133,486.16, 184,021 and 90,990.16 is: 125,436.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,486.16 : 184,021 = 90,990.16 : x
  2. Step 2: Convert to fraction form
    133,486.16/184,021 = 90,990.16/x
  3. Step 3: Cross multiply
    133,486.16x = 184,021 × 90,990.16
  4. Step 4: Simplify right side
    133,486.16x = 16,744,100,233.36
  5. Step 5: Solve for x
    x = 16,744,100,233.36/133,486.16
  6. Step 6: Final answer
    x = 125,436.98

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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.