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Finding the Fourth Proportional to 133,878.48, 184,785.90 and 90,930.66

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Solution

The fourth proportional to 133,878.48, 184,785.90 and 90,930.66 is: 125,507.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,878.48 : 184,785.90 = 90,930.66 : x
  2. Step 2: Convert to fraction form
    133,878.48/184,785.90 = 90,930.66/x
  3. Step 3: Cross multiply
    133,878.48x = 184,785.90 × 90,930.66
  4. Step 4: Simplify right side
    133,878.48x = 16,802,703,845.69
  5. Step 5: Solve for x
    x = 16,802,703,845.69/133,878.48
  6. Step 6: Final answer
    x = 125,507.13

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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.