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Finding the Fourth Proportional to 120,860, 181,160.40 and 58,392.80

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Solution

The fourth proportional to 120,860, 181,160.40 and 58,392.80 is: 87,526.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,860 : 181,160.40 = 58,392.80 : x
  2. Step 2: Convert to fraction form
    120,860/181,160.40 = 58,392.80/x
  3. Step 3: Cross multiply
    120,860x = 181,160.40 × 58,392.80
  4. Step 4: Simplify right side
    120,860x = 10,578,463,005.12
  5. Step 5: Solve for x
    x = 10,578,463,005.12/120,860
  6. Step 6: Final answer
    x = 87,526.58

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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.