Home / 128,311.55-192,492.94-39,561.67

Finding the Fourth Proportional to 128,311.55, 192,492.94 and 39,561.67

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Solution

The fourth proportional to 128,311.55, 192,492.94 and 39,561.67 is: 59,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,311.55 : 192,492.94 = 39,561.67 : x
  2. Step 2: Convert to fraction form
    128,311.55/192,492.94 = 39,561.67/x
  3. Step 3: Cross multiply
    128,311.55x = 192,492.94 × 39,561.67
  4. Step 4: Simplify right side
    128,311.55x = 7,615,342,169.61
  5. Step 5: Solve for x
    x = 7,615,342,169.61/128,311.55
  6. Step 6: Final answer
    x = 59,350.40

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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.