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Finding the Fourth Proportional to 88,188.88, 121,654 and 55,866.48

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Solution

The fourth proportional to 88,188.88, 121,654 and 55,866.48 is: 77,066.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,188.88 : 121,654 = 55,866.48 : x
  2. Step 2: Convert to fraction form
    88,188.88/121,654 = 55,866.48/x
  3. Step 3: Cross multiply
    88,188.88x = 121,654 × 55,866.48
  4. Step 4: Simplify right side
    88,188.88x = 6,796,380,757.92
  5. Step 5: Solve for x
    x = 6,796,380,757.92/88,188.88
  6. Step 6: Final answer
    x = 77,066.19

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1.5x scale

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.