Home / 138,571.05-191,228.55-74,908.85

Finding the Fourth Proportional to 138,571.05, 191,228.55 and 74,908.85

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Solution

The fourth proportional to 138,571.05, 191,228.55 and 74,908.85 is: 103,374.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,571.05 : 191,228.55 = 74,908.85 : x
  2. Step 2: Convert to fraction form
    138,571.05/191,228.55 = 74,908.85/x
  3. Step 3: Cross multiply
    138,571.05x = 191,228.55 × 74,908.85
  4. Step 4: Simplify right side
    138,571.05x = 14,324,710,606.28
  5. Step 5: Solve for x
    x = 14,324,710,606.28/138,571.05
  6. Step 6: Final answer
    x = 103,374.48

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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.