Home / 120,830.72-181,305.63-54,319.19

Finding the Fourth Proportional to 120,830.72, 181,305.63 and 54,319.19

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Solution

The fourth proportional to 120,830.72, 181,305.63 and 54,319.19 is: 81,505.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,830.72 : 181,305.63 = 54,319.19 : x
  2. Step 2: Convert to fraction form
    120,830.72/181,305.63 = 54,319.19/x
  3. Step 3: Cross multiply
    120,830.72x = 181,305.63 × 54,319.19
  4. Step 4: Simplify right side
    120,830.72x = 9,848,374,057.51
  5. Step 5: Solve for x
    x = 9,848,374,057.51/120,830.72
  6. Step 6: Final answer
    x = 81,505.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.