Home / 102,391.41-141,300.84-57,072.31

Finding the Fourth Proportional to 102,391.41, 141,300.84 and 57,072.31

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Solution

The fourth proportional to 102,391.41, 141,300.84 and 57,072.31 is: 78,760.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,391.41 : 141,300.84 = 57,072.31 : x
  2. Step 2: Convert to fraction form
    102,391.41/141,300.84 = 57,072.31/x
  3. Step 3: Cross multiply
    102,391.41x = 141,300.84 × 57,072.31
  4. Step 4: Simplify right side
    102,391.41x = 8,064,365,343.74
  5. Step 5: Solve for x
    x = 8,064,365,343.74/102,391.41
  6. Step 6: Final answer
    x = 78,760.17

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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.