Home / 117,122.09-161,517.85-76,870.76

Finding the Fourth Proportional to 117,122.09, 161,517.85 and 76,870.76

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Solution

The fourth proportional to 117,122.09, 161,517.85 and 76,870.76 is: 106,009.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,122.09 : 161,517.85 = 76,870.76 : x
  2. Step 2: Convert to fraction form
    117,122.09/161,517.85 = 76,870.76/x
  3. Step 3: Cross multiply
    117,122.09x = 161,517.85 × 76,870.76
  4. Step 4: Simplify right side
    117,122.09x = 12,415,998,883.30
  5. Step 5: Solve for x
    x = 12,415,998,883.30/117,122.09
  6. Step 6: Final answer
    x = 106,009.03

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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.