Home / 120,015.12-180,042.16-36,909.12

Finding the Fourth Proportional to 120,015.12, 180,042.16 and 36,909.12

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Solution

The fourth proportional to 120,015.12, 180,042.16 and 36,909.12 is: 55,369.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,015.12 : 180,042.16 = 36,909.12 : x
  2. Step 2: Convert to fraction form
    120,015.12/180,042.16 = 36,909.12/x
  3. Step 3: Cross multiply
    120,015.12x = 180,042.16 × 36,909.12
  4. Step 4: Simplify right side
    120,015.12x = 6,645,197,688.50
  5. Step 5: Solve for x
    x = 6,645,197,688.50/120,015.12
  6. Step 6: Final answer
    x = 55,369.67

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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.