Home / 115,679.44-159,636.51-64,691.59

Finding the Fourth Proportional to 115,679.44, 159,636.51 and 64,691.59

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Solution

The fourth proportional to 115,679.44, 159,636.51 and 64,691.59 is: 89,273.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,679.44 : 159,636.51 = 64,691.59 : x
  2. Step 2: Convert to fraction form
    115,679.44/159,636.51 = 64,691.59/x
  3. Step 3: Cross multiply
    115,679.44x = 159,636.51 × 64,691.59
  4. Step 4: Simplify right side
    115,679.44x = 10,327,139,653.95
  5. Step 5: Solve for x
    x = 10,327,139,653.95/115,679.44
  6. Step 6: Final answer
    x = 89,273.77

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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.