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Finding the Fourth Proportional to 121,349.60, 181,635.60 and 94,911.20

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Solution

The fourth proportional to 121,349.60, 181,635.60 and 94,911.20 is: 142,062.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,349.60 : 181,635.60 = 94,911.20 : x
  2. Step 2: Convert to fraction form
    121,349.60/181,635.60 = 94,911.20/x
  3. Step 3: Cross multiply
    121,349.60x = 181,635.60 × 94,911.20
  4. Step 4: Simplify right side
    121,349.60x = 17,239,252,758.72
  5. Step 5: Solve for x
    x = 17,239,252,758.72/121,349.60
  6. Step 6: Final answer
    x = 142,062.71

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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.