Home / 120,598.36-180,880.78-84,465.37

Finding the Fourth Proportional to 120,598.36, 180,880.78 and 84,465.37

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Solution

The fourth proportional to 120,598.36, 180,880.78 and 84,465.37 is: 126,686.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,598.36 : 180,880.78 = 84,465.37 : x
  2. Step 2: Convert to fraction form
    120,598.36/180,880.78 = 84,465.37/x
  3. Step 3: Cross multiply
    120,598.36x = 180,880.78 × 84,465.37
  4. Step 4: Simplify right side
    120,598.36x = 15,278,162,023.53
  5. Step 5: Solve for x
    x = 15,278,162,023.53/120,598.36
  6. Step 6: Final answer
    x = 126,686.32

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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.