Home / 102,388.41-141,296.70-57,069.31

Finding the Fourth Proportional to 102,388.41, 141,296.70 and 57,069.31

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Solution

The fourth proportional to 102,388.41, 141,296.70 and 57,069.31 is: 78,756.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,388.41 : 141,296.70 = 57,069.31 : x
  2. Step 2: Convert to fraction form
    102,388.41/141,296.70 = 57,069.31/x
  3. Step 3: Cross multiply
    102,388.41x = 141,296.70 × 57,069.31
  4. Step 4: Simplify right side
    102,388.41x = 8,063,704,938.83
  5. Step 5: Solve for x
    x = 8,063,704,938.83/102,388.41
  6. Step 6: Final answer
    x = 78,756.03

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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.