Home / 104,811.20-157,216.80-73,318.40

Finding the Fourth Proportional to 104,811.20, 157,216.80 and 73,318.40

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Solution

The fourth proportional to 104,811.20, 157,216.80 and 73,318.40 is: 109,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,811.20 : 157,216.80 = 73,318.40 : x
  2. Step 2: Convert to fraction form
    104,811.20/157,216.80 = 73,318.40/x
  3. Step 3: Cross multiply
    104,811.20x = 157,216.80 × 73,318.40
  4. Step 4: Simplify right side
    104,811.20x = 11,526,884,229.12
  5. Step 5: Solve for x
    x = 11,526,884,229.12/104,811.20
  6. Step 6: Final answer
    x = 109,977.60

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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.