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Finding the Fourth Proportional to 121,289.40, 181,958.40 and 101,703.60

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Solution

The fourth proportional to 121,289.40, 181,958.40 and 101,703.60 is: 152,575.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,289.40 : 181,958.40 = 101,703.60 : x
  2. Step 2: Convert to fraction form
    121,289.40/181,958.40 = 101,703.60/x
  3. Step 3: Cross multiply
    121,289.40x = 181,958.40 × 101,703.60
  4. Step 4: Simplify right side
    121,289.40x = 18,505,824,330.24
  5. Step 5: Solve for x
    x = 18,505,824,330.24/121,289.40
  6. Step 6: Final answer
    x = 152,575.78

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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.