Home / 80,883.40-121,325.10-79,328.20

Finding the Fourth Proportional to 80,883.40, 121,325.10 and 79,328.20

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Solution

The fourth proportional to 80,883.40, 121,325.10 and 79,328.20 is: 118,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,883.40 : 121,325.10 = 79,328.20 : x
  2. Step 2: Convert to fraction form
    80,883.40/121,325.10 = 79,328.20/x
  3. Step 3: Cross multiply
    80,883.40x = 121,325.10 × 79,328.20
  4. Step 4: Simplify right side
    80,883.40x = 9,624,501,797.82
  5. Step 5: Solve for x
    x = 9,624,501,797.82/80,883.40
  6. Step 6: Final answer
    x = 118,992.30

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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.