Home / 115,709.58-159,633.57-72,663.75

Finding the Fourth Proportional to 115,709.58, 159,633.57 and 72,663.75

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Solution

The fourth proportional to 115,709.58, 159,633.57 and 72,663.75 is: 100,247.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,709.58 : 159,633.57 = 72,663.75 : x
  2. Step 2: Convert to fraction form
    115,709.58/159,633.57 = 72,663.75/x
  3. Step 3: Cross multiply
    115,709.58x = 159,633.57 × 72,663.75
  4. Step 4: Simplify right side
    115,709.58x = 11,599,573,822.09
  5. Step 5: Solve for x
    x = 11,599,573,822.09/115,709.58
  6. Step 6: Final answer
    x = 100,247.31

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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.