Home / 120,323.60-180,435.68-45,431.04

Finding the Fourth Proportional to 120,323.60, 180,435.68 and 45,431.04

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Solution

The fourth proportional to 120,323.60, 180,435.68 and 45,431.04 is: 68,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,323.60 : 180,435.68 = 45,431.04 : x
  2. Step 2: Convert to fraction form
    120,323.60/180,435.68 = 45,431.04/x
  3. Step 3: Cross multiply
    120,323.60x = 180,435.68 × 45,431.04
  4. Step 4: Simplify right side
    120,323.60x = 8,197,380,595.51
  5. Step 5: Solve for x
    x = 8,197,380,595.51/120,323.60
  6. Step 6: Final answer
    x = 68,127.79

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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.