Home / 115,513.31-159,391.41-64,519.76

Finding the Fourth Proportional to 115,513.31, 159,391.41 and 64,519.76

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Solution

The fourth proportional to 115,513.31, 159,391.41 and 64,519.76 is: 89,027.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,513.31 : 159,391.41 = 64,519.76 : x
  2. Step 2: Convert to fraction form
    115,513.31/159,391.41 = 64,519.76/x
  3. Step 3: Cross multiply
    115,513.31x = 159,391.41 × 64,519.76
  4. Step 4: Simplify right side
    115,513.31x = 10,283,895,519.26
  5. Step 5: Solve for x
    x = 10,283,895,519.26/115,513.31
  6. Step 6: Final answer
    x = 89,027.80

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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.