Home / 115,431.66-159,298.19-63,748.61

Finding the Fourth Proportional to 115,431.66, 159,298.19 and 63,748.61

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Solution

The fourth proportional to 115,431.66, 159,298.19 and 63,748.61 is: 87,974.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,431.66 : 159,298.19 = 63,748.61 : x
  2. Step 2: Convert to fraction form
    115,431.66/159,298.19 = 63,748.61/x
  3. Step 3: Cross multiply
    115,431.66x = 159,298.19 × 63,748.61
  4. Step 4: Simplify right side
    115,431.66x = 10,155,037,072.78
  5. Step 5: Solve for x
    x = 10,155,037,072.78/115,431.66
  6. Step 6: Final answer
    x = 87,974.45

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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.