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Finding the Fourth Proportional to 120,762.40, 181,208.40 and 50,648.80

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Solution

The fourth proportional to 120,762.40, 181,208.40 and 50,648.80 is: 76,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,762.40 : 181,208.40 = 50,648.80 : x
  2. Step 2: Convert to fraction form
    120,762.40/181,208.40 = 50,648.80/x
  3. Step 3: Cross multiply
    120,762.40x = 181,208.40 × 50,648.80
  4. Step 4: Simplify right side
    120,762.40x = 9,177,988,009.92
  5. Step 5: Solve for x
    x = 9,177,988,009.92/120,762.40
  6. Step 6: Final answer
    x = 76,000.38

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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.