Home / 103,018.59-142,163.98-57,696.20

Finding the Fourth Proportional to 103,018.59, 142,163.98 and 57,696.20

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Solution

The fourth proportional to 103,018.59, 142,163.98 and 57,696.20 is: 79,619.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,018.59 : 142,163.98 = 57,696.20 : x
  2. Step 2: Convert to fraction form
    103,018.59/142,163.98 = 57,696.20/x
  3. Step 3: Cross multiply
    103,018.59x = 142,163.98 × 57,696.20
  4. Step 4: Simplify right side
    103,018.59x = 8,202,321,900.60
  5. Step 5: Solve for x
    x = 8,202,321,900.60/103,018.59
  6. Step 6: Final answer
    x = 79,619.82

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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.