Home / 128,237.30-192,125.55-109,805.30

Finding the Fourth Proportional to 128,237.30, 192,125.55 and 109,805.30

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Solution

The fourth proportional to 128,237.30, 192,125.55 and 109,805.30 is: 164,510.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,237.30 : 192,125.55 = 109,805.30 : x
  2. Step 2: Convert to fraction form
    128,237.30/192,125.55 = 109,805.30/x
  3. Step 3: Cross multiply
    128,237.30x = 192,125.55 × 109,805.30
  4. Step 4: Simplify right side
    128,237.30x = 21,096,403,655.42
  5. Step 5: Solve for x
    x = 21,096,403,655.42/128,237.30
  6. Step 6: Final answer
    x = 164,510.67

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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.