Home / 86,985.02-120,097.17-66,805.85

Finding the Fourth Proportional to 86,985.02, 120,097.17 and 66,805.85

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Solution

The fourth proportional to 86,985.02, 120,097.17 and 66,805.85 is: 92,236.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,985.02 : 120,097.17 = 66,805.85 : x
  2. Step 2: Convert to fraction form
    86,985.02/120,097.17 = 66,805.85/x
  3. Step 3: Cross multiply
    86,985.02x = 120,097.17 × 66,805.85
  4. Step 4: Simplify right side
    86,985.02x = 8,023,192,923.96
  5. Step 5: Solve for x
    x = 8,023,192,923.96/86,985.02
  6. Step 6: Final answer
    x = 92,236.50

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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.