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Finding the Fourth Proportional to 144,882.87, 199,938.24 and 81,220.67

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Solution

The fourth proportional to 144,882.87, 199,938.24 and 81,220.67 is: 112,084.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,882.87 : 199,938.24 = 81,220.67 : x
  2. Step 2: Convert to fraction form
    144,882.87/199,938.24 = 81,220.67/x
  3. Step 3: Cross multiply
    144,882.87x = 199,938.24 × 81,220.67
  4. Step 4: Simplify right side
    144,882.87x = 16,239,117,811.42
  5. Step 5: Solve for x
    x = 16,239,117,811.42/144,882.87
  6. Step 6: Final answer
    x = 112,084.46

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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.