Home / 120,954.40-181,431.60-76,631.20

Finding the Fourth Proportional to 120,954.40, 181,431.60 and 76,631.20

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Solution

The fourth proportional to 120,954.40, 181,431.60 and 76,631.20 is: 114,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,954.40 : 181,431.60 = 76,631.20 : x
  2. Step 2: Convert to fraction form
    120,954.40/181,431.60 = 76,631.20/x
  3. Step 3: Cross multiply
    120,954.40x = 181,431.60 × 76,631.20
  4. Step 4: Simplify right side
    120,954.40x = 13,903,321,225.92
  5. Step 5: Solve for x
    x = 13,903,321,225.92/120,954.40
  6. Step 6: Final answer
    x = 114,946.80

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1.5x scale

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.