Home / 102,438.98-141,355.44-57,112.70

Finding the Fourth Proportional to 102,438.98, 141,355.44 and 57,112.70

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Solution

The fourth proportional to 102,438.98, 141,355.44 and 57,112.70 is: 78,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,438.98 : 141,355.44 = 57,112.70 : x
  2. Step 2: Convert to fraction form
    102,438.98/141,355.44 = 57,112.70/x
  3. Step 3: Cross multiply
    102,438.98x = 141,355.44 × 57,112.70
  4. Step 4: Simplify right side
    102,438.98x = 8,073,191,191.48
  5. Step 5: Solve for x
    x = 8,073,191,191.48/102,438.98
  6. Step 6: Final answer
    x = 78,809.76

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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.