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Finding the Fourth Proportional to 151,448.80, 208,999.92 and 87,824.08

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Solution

The fourth proportional to 151,448.80, 208,999.92 and 87,824.08 is: 121,197.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,448.80 : 208,999.92 = 87,824.08 : x
  2. Step 2: Convert to fraction form
    151,448.80/208,999.92 = 87,824.08/x
  3. Step 3: Cross multiply
    151,448.80x = 208,999.92 × 87,824.08
  4. Step 4: Simplify right side
    151,448.80x = 18,355,225,694.07
  5. Step 5: Solve for x
    x = 18,355,225,694.07/151,448.80
  6. Step 6: Final answer
    x = 121,197.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.