Home / 102,386.88-141,288-57,063.36

Finding the Fourth Proportional to 102,386.88, 141,288 and 57,063.36

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Solution

The fourth proportional to 102,386.88, 141,288 and 57,063.36 is: 78,744.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,386.88 : 141,288 = 57,063.36 : x
  2. Step 2: Convert to fraction form
    102,386.88/141,288 = 57,063.36/x
  3. Step 3: Cross multiply
    102,386.88x = 141,288 × 57,063.36
  4. Step 4: Simplify right side
    102,386.88x = 8,062,368,007.68
  5. Step 5: Solve for x
    x = 8,062,368,007.68/102,386.88
  6. Step 6: Final answer
    x = 78,744.15

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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.