Home / 88,344.80-121,608.04-76,994.78

Finding the Fourth Proportional to 88,344.80, 121,608.04 and 76,994.78

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Solution

The fourth proportional to 88,344.80, 121,608.04 and 76,994.78 is: 105,984.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,344.80 : 121,608.04 = 76,994.78 : x
  2. Step 2: Convert to fraction form
    88,344.80/121,608.04 = 76,994.78/x
  3. Step 3: Cross multiply
    88,344.80x = 121,608.04 × 76,994.78
  4. Step 4: Simplify right side
    88,344.80x = 9,363,184,493.81
  5. Step 5: Solve for x
    x = 9,363,184,493.81/88,344.80
  6. Step 6: Final answer
    x = 105,984.56

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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.