Home / 86,989.02-120,102.70-66,809.84

Finding the Fourth Proportional to 86,989.02, 120,102.70 and 66,809.84

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Solution

The fourth proportional to 86,989.02, 120,102.70 and 66,809.84 is: 92,242.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,989.02 : 120,102.70 = 66,809.84 : x
  2. Step 2: Convert to fraction form
    86,989.02/120,102.70 = 66,809.84/x
  3. Step 3: Cross multiply
    86,989.02x = 120,102.70 × 66,809.84
  4. Step 4: Simplify right side
    86,989.02x = 8,024,042,170.57
  5. Step 5: Solve for x
    x = 8,024,042,170.57/86,989.02
  6. Step 6: Final answer
    x = 92,242.01

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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.