Home / 139,234.02-192,137.80-75,570.45

Finding the Fourth Proportional to 139,234.02, 192,137.80 and 75,570.45

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Solution

The fourth proportional to 139,234.02, 192,137.80 and 75,570.45 is: 104,284.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,234.02 : 192,137.80 = 75,570.45 : x
  2. Step 2: Convert to fraction form
    139,234.02/192,137.80 = 75,570.45/x
  3. Step 3: Cross multiply
    139,234.02x = 192,137.80 × 75,570.45
  4. Step 4: Simplify right side
    139,234.02x = 14,519,940,008.01
  5. Step 5: Solve for x
    x = 14,519,940,008.01/139,234.02
  6. Step 6: Final answer
    x = 104,284.43

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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.