Home / 109,287.68-163,888.31-53,111.15

Finding the Fourth Proportional to 109,287.68, 163,888.31 and 53,111.15

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Solution

The fourth proportional to 109,287.68, 163,888.31 and 53,111.15 is: 79,645.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,287.68 : 163,888.31 = 53,111.15 : x
  2. Step 2: Convert to fraction form
    109,287.68/163,888.31 = 53,111.15/x
  3. Step 3: Cross multiply
    109,287.68x = 163,888.31 × 53,111.15
  4. Step 4: Simplify right side
    109,287.68x = 8,704,295,530.66
  5. Step 5: Solve for x
    x = 8,704,295,530.66/109,287.68
  6. Step 6: Final answer
    x = 79,645.72

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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.