Home / 102,390.41-141,299.46-57,071.31

Finding the Fourth Proportional to 102,390.41, 141,299.46 and 57,071.31

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Solution

The fourth proportional to 102,390.41, 141,299.46 and 57,071.31 is: 78,758.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,390.41 : 141,299.46 = 57,071.31 : x
  2. Step 2: Convert to fraction form
    102,390.41/141,299.46 = 57,071.31/x
  3. Step 3: Cross multiply
    102,390.41x = 141,299.46 × 57,071.31
  4. Step 4: Simplify right side
    102,390.41x = 8,064,145,284.49
  5. Step 5: Solve for x
    x = 8,064,145,284.49/102,390.41
  6. Step 6: Final answer
    x = 78,758.79

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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.