Home / 128,932.70-193,522.13-79,110.10

Finding the Fourth Proportional to 128,932.70, 193,522.13 and 79,110.10

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Solution

The fourth proportional to 128,932.70, 193,522.13 and 79,110.10 is: 118,740.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,932.70 : 193,522.13 = 79,110.10 : x
  2. Step 2: Convert to fraction form
    128,932.70/193,522.13 = 79,110.10/x
  3. Step 3: Cross multiply
    128,932.70x = 193,522.13 × 79,110.10
  4. Step 4: Simplify right side
    128,932.70x = 15,309,555,199.53
  5. Step 5: Solve for x
    x = 15,309,555,199.53/128,932.70
  6. Step 6: Final answer
    x = 118,740.67

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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.