Home / 120,124.05-165,756.78-66,401.77

Finding the Fourth Proportional to 120,124.05, 165,756.78 and 66,401.77

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Solution

The fourth proportional to 120,124.05, 165,756.78 and 66,401.77 is: 91,626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,124.05 : 165,756.78 = 66,401.77 : x
  2. Step 2: Convert to fraction form
    120,124.05/165,756.78 = 66,401.77/x
  3. Step 3: Cross multiply
    120,124.05x = 165,756.78 × 66,401.77
  4. Step 4: Simplify right side
    120,124.05x = 11,006,543,581.50
  5. Step 5: Solve for x
    x = 11,006,543,581.50/120,124.05
  6. Step 6: Final answer
    x = 91,626.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.