Home / 139,770.68-192,877.74-76,108.32

Finding the Fourth Proportional to 139,770.68, 192,877.74 and 76,108.32

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Solution

The fourth proportional to 139,770.68, 192,877.74 and 76,108.32 is: 105,026.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,770.68 : 192,877.74 = 76,108.32 : x
  2. Step 2: Convert to fraction form
    139,770.68/192,877.74 = 76,108.32/x
  3. Step 3: Cross multiply
    139,770.68x = 192,877.74 × 76,108.32
  4. Step 4: Simplify right side
    139,770.68x = 14,679,600,756.80
  5. Step 5: Solve for x
    x = 14,679,600,756.80/139,770.68
  6. Step 6: Final answer
    x = 105,026.33

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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.