Home / 139,431.95-192,415.17-75,769.74

Finding the Fourth Proportional to 139,431.95, 192,415.17 and 75,769.74

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Solution

The fourth proportional to 139,431.95, 192,415.17 and 75,769.74 is: 104,561.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,431.95 : 192,415.17 = 75,769.74 : x
  2. Step 2: Convert to fraction form
    139,431.95/192,415.17 = 75,769.74/x
  3. Step 3: Cross multiply
    139,431.95x = 192,415.17 × 75,769.74
  4. Step 4: Simplify right side
    139,431.95x = 14,579,247,687.09
  5. Step 5: Solve for x
    x = 14,579,247,687.09/139,431.95
  6. Step 6: Final answer
    x = 104,561.74

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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.