Home / 86,988.58-120,102.09-66,809.41

Finding the Fourth Proportional to 86,988.58, 120,102.09 and 66,809.41

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Solution

The fourth proportional to 86,988.58, 120,102.09 and 66,809.41 is: 92,241.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,988.58 : 120,102.09 = 66,809.41 : x
  2. Step 2: Convert to fraction form
    86,988.58/120,102.09 = 66,809.41/x
  3. Step 3: Cross multiply
    86,988.58x = 120,102.09 × 66,809.41
  4. Step 4: Simplify right side
    86,988.58x = 8,023,949,597.68
  5. Step 5: Solve for x
    x = 8,023,949,597.68/86,988.58
  6. Step 6: Final answer
    x = 92,241.41

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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.