Home / 138,835.52-191,571.36-82,237.76

Finding the Fourth Proportional to 138,835.52, 191,571.36 and 82,237.76

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Solution

The fourth proportional to 138,835.52, 191,571.36 and 82,237.76 is: 113,475.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,835.52 : 191,571.36 = 82,237.76 : x
  2. Step 2: Convert to fraction form
    138,835.52/191,571.36 = 82,237.76/x
  3. Step 3: Cross multiply
    138,835.52x = 191,571.36 × 82,237.76
  4. Step 4: Simplify right side
    138,835.52x = 15,754,399,526.55
  5. Step 5: Solve for x
    x = 15,754,399,526.55/138,835.52
  6. Step 6: Final answer
    x = 113,475.28

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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.