Home / 138,880.86-208,278.30-50,123.13

Finding the Fourth Proportional to 138,880.86, 208,278.30 and 50,123.13

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Solution

The fourth proportional to 138,880.86, 208,278.30 and 50,123.13 is: 75,169.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,880.86 : 208,278.30 = 50,123.13 : x
  2. Step 2: Convert to fraction form
    138,880.86/208,278.30 = 50,123.13/x
  3. Step 3: Cross multiply
    138,880.86x = 208,278.30 × 50,123.13
  4. Step 4: Simplify right side
    138,880.86x = 10,439,560,056.46
  5. Step 5: Solve for x
    x = 10,439,560,056.46/138,880.86
  6. Step 6: Final answer
    x = 75,169.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.