Home / 139,770.15-192,883.04-76,108.20

Finding the Fourth Proportional to 139,770.15, 192,883.04 and 76,108.20

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Solution

The fourth proportional to 139,770.15, 192,883.04 and 76,108.20 is: 105,029.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,770.15 : 192,883.04 = 76,108.20 : x
  2. Step 2: Convert to fraction form
    139,770.15/192,883.04 = 76,108.20/x
  3. Step 3: Cross multiply
    139,770.15x = 192,883.04 × 76,108.20
  4. Step 4: Simplify right side
    139,770.15x = 14,679,980,984.93
  5. Step 5: Solve for x
    x = 14,679,980,984.93/139,770.15
  6. Step 6: Final answer
    x = 105,029.44

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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.