Home / 81,156.20-121,880.10-58,994.60

Finding the Fourth Proportional to 81,156.20, 121,880.10 and 58,994.60

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Solution

The fourth proportional to 81,156.20, 121,880.10 and 58,994.60 is: 88,597.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,156.20 : 121,880.10 = 58,994.60 : x
  2. Step 2: Convert to fraction form
    81,156.20/121,880.10 = 58,994.60/x
  3. Step 3: Cross multiply
    81,156.20x = 121,880.10 × 58,994.60
  4. Step 4: Simplify right side
    81,156.20x = 7,190,267,747.46
  5. Step 5: Solve for x
    x = 7,190,267,747.46/81,156.20
  6. Step 6: Final answer
    x = 88,597.89

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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.