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Finding the Fourth Proportional to 139,144.88, 192,020.30 and 75,482.67

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Solution

The fourth proportional to 139,144.88, 192,020.30 and 75,482.67 is: 104,166.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,144.88 : 192,020.30 = 75,482.67 : x
  2. Step 2: Convert to fraction form
    139,144.88/192,020.30 = 75,482.67/x
  3. Step 3: Cross multiply
    139,144.88x = 192,020.30 × 75,482.67
  4. Step 4: Simplify right side
    139,144.88x = 14,494,205,885.47
  5. Step 5: Solve for x
    x = 14,494,205,885.47/139,144.88
  6. Step 6: Final answer
    x = 104,166.29

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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.