Home / 102,564.20-153,716.70-91,418.60

Finding the Fourth Proportional to 102,564.20, 153,716.70 and 91,418.60

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Solution

The fourth proportional to 102,564.20, 153,716.70 and 91,418.60 is: 137,012.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,564.20 : 153,716.70 = 91,418.60 : x
  2. Step 2: Convert to fraction form
    102,564.20/153,716.70 = 91,418.60/x
  3. Step 3: Cross multiply
    102,564.20x = 153,716.70 × 91,418.60
  4. Step 4: Simplify right side
    102,564.20x = 14,052,565,510.62
  5. Step 5: Solve for x
    x = 14,052,565,510.62/102,564.20
  6. Step 6: Final answer
    x = 137,012.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.