Home / 139,235.02-192,139.18-75,571.46

Finding the Fourth Proportional to 139,235.02, 192,139.18 and 75,571.46

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Solution

The fourth proportional to 139,235.02, 192,139.18 and 75,571.46 is: 104,285.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,235.02 : 192,139.18 = 75,571.46 : x
  2. Step 2: Convert to fraction form
    139,235.02/192,139.18 = 75,571.46/x
  3. Step 3: Cross multiply
    139,235.02x = 192,139.18 × 75,571.46
  4. Step 4: Simplify right side
    139,235.02x = 14,520,238,355.80
  5. Step 5: Solve for x
    x = 14,520,238,355.80/139,235.02
  6. Step 6: Final answer
    x = 104,285.82

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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.